The Habit Healers

Your doctor said your bloodwork looks normal. But normal only describes what they actually tested. In this episode I walk you through eight tests your annual physical almost never includes, four blood markers and four at-home assessments, that reveal not just where your health stands but where it’s heading.

We start with the blood tests your standard panel leaves off. I explain why fasting insulin and HOMA-IR can flag insulin resistance years before your glucose ever moves, why ApoB counts the particles that actually drive cardiovascular risk while LDL only measures the cargo, why Lp(a) is a once-in-a-lifetime genetic test that one in five people need, and why hsCRP catches the inflammation half of heart disease that cholesterol numbers miss entirely. Then we shift to four things you can measure in your living room in under five minutes: grip strength, single-leg balance, gait speed, and the chair sit-to-stand. Each one has been tied in large studies to how well you’re aging, and not one shows up at a routine visit.

This is the conversation I wish every patient could have before they walk in for their next physical.

What you’ll learn:

* Why fasting insulin and HOMA-IR detect insulin resistance long before standard glucose tests

* How ApoB and Lp(a) sharpen your true cardiovascular risk beyond LDL cholesterol

* What hsCRP reveals about inflammation and heart health

* Four at-home longevity tests: grip strength, balance, gait speed, and sit-to-stand

* The exact metabolic health markers to request at your next appointment

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/what-are-the-8-tests-your-doctor

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

What if you could stay strong, steady, and independent as you age without ever setting foot in a gym? In this episode of The Habit Healers Podcast, I break down the science of NEAT, non-exercise activity thermogenesis, and exercise snacking, and how tiny bursts of movement woven into your day can lower your risk of early death as much as a structured workout.

I’m Dr. Laurie Marbas, and one of the most freeing things I’ve learned in lifestyle medicine is that staying fit as you age isn’t really about willpower or gym memberships. The research shows that a few minutes of movement scattered through your normal day, while the kettle heats, while the microwave runs, while you carry groceries in from the car, can protect your heart, your blood sugar, your balance, and your ability to live on your own terms for decades. I walk you through nine simple movements you can anchor to routines you already have, from calf raises at the counter to a bathroom squat to a one-leg balance, each one targeting a quality that predicts how well you’ll age. You don’t need all nine. You just need one. Let’s talk about what the science actually says.

What you’ll learn in this episode:

* Why NEAT (non-exercise activity thermogenesis) burns more daily calories than exercise for most people

* How just three and a half minutes of daily movement can lower all-cause and cardiovascular mortality risk

* The exercise snacking approach to balancing blood sugar and improving insulin sensitivity

* Simple functional fitness moves for strength, balance, and fall prevention as you age

* Why grip strength is one of the strongest predictors of longevity and healthy aging

* How to anchor a new movement habit to a routine you already have so it actually lasts

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/what-if-the-best-workout-you-could

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Your morning blood sugar might be climbing before you even get out of bed, and the order you do things next can either calm it down or send it higher. In this episode I walk you through the morning blood sugar stack, a simple way to rearrange the morning you already have.

If you’ve ever wondered why your blood sugar runs high in the morning, the answer starts with something called the dawn phenomenon, your body’s natural pre-wake surge of glucose. The good news is you have more control than you think. I break down what the research actually says about coffee and blood sugar, why drinking it before food can blunt how your body handles sugar, and why waiting until after breakfast matters. We talk about meal sequencing, the simple habit of eating protein and vegetables before carbs, and how it can sharply cut post-meal blood sugar spikes. I also cover hydration, a short post-meal walk, front-loading your calories at breakfast, and a few surprising factors like gum health that quietly affect insulin resistance. None of this asks you to add time to your morning. It just asks you to reorder it.

In this episode you’ll learn:

* Why morning blood sugar is naturally highest, and what the dawn phenomenon really is

* How coffee and blood sugar interact, and the best time to drink your morning cup

* The meal sequencing trick of eating protein and vegetables before carbs to reduce blood sugar spikes

* Why morning hydration and a short post-meal walk support healthy glucose

* How front-loading calories at breakfast can improve insulin sensitivity and metabolic health

* Simple ways to use a continuous glucose monitor to test what works for your body

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/what-if-your-morning-coffee-is-spiking

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Can you lower thyroid antibodies naturally, or is Hashimoto’s thyroiditis just something you have to live with? After thirty years with this disease, here’s what I’ve learned: the answer lives in an unexpected place, a coral reef.

In this episode of The Habit Healers Podcast, I’m Dr. Laurie Marbas, and I’m sharing the framework that finally made sense of my own diagnosis, and later my son’s. Hashimoto’s is the most common autoimmune disease in the world, affecting roughly one in thirteen adults, yet most people walk out of the doctor’s office with a levothyroxine prescription and almost nothing else. That prescription is necessary, but it does nothing about why the immune system is attacking the gland in the first place. Just like marine biologists learned you cannot fix bleached coral by treating the coral, you have to fix the ocean around it. I’ll walk you through what that means for your thyroid, including why postpartum thyroiditis blindsides so many new moms, how the gut-thyroid axis quietly drives inflammation, and the five evidence-based levers that target the immune environment instead of the gland. This is lifestyle medicine grounded in the actual research, with no hype and no false promises.

What you’ll learn in this episode:

* Why hypothyroidism and rising TPO antibodies often start years before symptoms appear

* How selenium and vitamin D can help lower thyroid antibodies naturally

* The gut-thyroid axis and what it means for inflammation and autoimmune thyroid disease

* Why postpartum thyroiditis happens and who’s most at risk

* How a plant-based diet can quietly cause iodine deficiency, and how to prevent it

* What “remission” realistically looks like with Hashimoto’s

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/is-your-thyroid-medication-enough

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

I want you to try something right now. Sit down in a chair. Now stand back up. Did your hands go to your thighs to push yourself up? Did you lean forward and rock a little to build momentum?

If so, you are not alone. And you just identified exactly why this week’s Substack Live with my friend Maxime Sigouin matters so much.

Maxime has been in the fitness space for over a decade. He has helped more than 1,200 people transform their bodies, written a book on fitness and body composition, and built a coaching practice specifically focused on people over 50 who are losing muscle mass and bone density. I did his program myself about two and a half years ago, and I can tell you firsthand that his approach changed how I think about movement entirely.

What Maxime walked us through in this session are the five compound exercises that translate directly to the movements your body needs to perform every single day. Getting up from a chair. Picking up a box from the floor. Putting something on a high shelf. Pushing open a heavy door. These are the movements that start to fail as we lose muscle, and once they go, independence goes with them.

If you watched the live session, this article will give you a written reference you can come back to whenever you need a refresher on form and cues. If you missed it, the replay is right above this post.

What Makes These Five Exercises Different

Most people think of exercise in gym terms. Machines with cables, mirrors on every wall, someone counting reps in your ear. But Maxime’s starting question is different. He asks what your body actually needs to do in real life, and then he builds the training around that.

The five movements he demonstrated are all compound exercises, meaning they involve multiple joints working together at the same time. A push-up uses your shoulder and your elbow. A squat works your hips, your knees, and your ankles all at once. This is the opposite of an isolation exercise like a bicep curl, which only bends one joint.

Why does that matter? Because nothing you do in your daily life involves one joint. When you bend down to pick up a grandchild, you are hinging at the hips, bending at the knees, bracing through your core, and gripping with your hands all at the same time. Training that way builds strength the way your body actually uses it.

The One Cue That Runs Through Everything

Before Maxime even picked up a weight, he spent time on the single most important technique that applies to every exercise he demonstrated. Core engagement.

And he did not mean sucking in your stomach or crunching forward like you are doing a sit-up. His instructions were specific. Draw your belly button inward, then do a Kegel. That second part is the one most people skip. If you have ever had to find a bathroom urgently and had to hold it, you know the muscle contraction he is talking about. That combination of pulling in and holding creates a brace around your midsection that protects your lower back during every movement.

The key, he emphasized, is that you should still be able to breathe while holding that tension. Most people hold their breath the moment they engage their core, and as Maxime put it, they start turning blue after about ten seconds. The goal is to maintain that brace while breathing normally through the movement.

He also explained that if you skip this step, the tension has to go somewhere. It is either going into your core muscles at the front of your body, or it is going into your lower back. You get to choose. And for every one of these five exercises, the answer should always be your core.

The Squat

This is the one that matters most as you age. Your ability to get up from a chair, climb stairs, and catch your balance when you stumble all depends on leg strength. And if you fall and fracture something after 50, the recovery timeline is dramatically different than it was when you were twenty.

Maxime broke the squat down into pieces. Feet about shoulder width apart, toes pointed outward at roughly fifteen degrees. That small angle helps engage your glutes and hamstrings, which are the primary muscles doing the work. As you lower, you are sending your hips backward at roughly a forty-five degree angle while pushing your knees outward. You go down to ninety degrees, then squeeze your glutes to come back up.

One detail he kept coming back to is what happens with your knees. Your body will always find the path of least resistance, and for most people, that means the knees want to buckle inward as you squat. Pushing them outward throughout the entire movement is what ensures you are actually working the right muscles and not putting damaging pressure on the knee joint.

For the beginner version, he grabbed a chair and placed it behind him. The goal is to lower yourself until you lightly touch the seat, then stand back up without releasing all the tension at the bottom. You are not sitting down and resting. You are tapping the chair as a depth marker and driving right back up. If even that is too challenging, stand next to your kitchen counter and hold on for support while you build the strength.

The intermediate version adds dumbbells held at the shoulders. Same movement, same cues, just added resistance. And for the advanced version, Maxime demonstrated a goblet squat, holding a heavier dumbbell close to the chest. Keeping the weight tight to your body matters because the farther a weight drifts from your center of gravity, the more your lower back has to compensate.

I asked him about going below ninety degrees, and his answer was practical. You can, but only if your form is flawless first. If your knees track outward properly the entire time and your heels stay flat on the ground, you can explore deeper range. But if going lower means coming up on your toes or letting your knees cave in, you are better off staying at ninety and adding more weight to increase the challenge.

I also mentioned that I have used a resistance band around my knees during squats to help with that outward tracking. Maxime agreed it works but recommended using a lighter band for this purpose. If you grab a heavy band, you are adding significant difficulty to the exercise itself rather than just reinforcing the knee position.

The Deadlift

This is the one that saves your back. Every time you pick something up from the floor, you are performing some version of a deadlift. And this is where most people get injured, because they round their shoulders forward and let all the load transfer to their lower back.

The deadlift looks similar to the squat in the lower body, but instead of pushing weight, you are pulling it. Maxime started from a standing position since most people doing this at home will use dumbbells rather than a barbell. The movement begins with a hip hinge, sending the hips backward while keeping the back straight. Once the hands reach the knees, the lower portion becomes a squat. Coming back up, you squat to clear the knees, then drive the hips forward like a hip thrust to finish standing.

The critical detail here is shoulder position. Maxime demonstrated how people instinctively round their shoulders forward to try to reach lower, thinking further means better. Instead, he had us pull the shoulders back and down, locking them into the ball-and-socket joint. This limits how far down you can reach, which is actually the point. It prevents you from cheating the movement with your back and keeps the work where it belongs, in the legs and glutes.

For the beginner version, you can practice the motion with no weight at all. Maxime even suggested grabbing a light box and placing it on a couch cushion to simulate picking something up from the ground, because that is what this exercise is really training you for. The intermediate and advanced versions simply increase the dumbbell weight.

He also explained the Romanian deadlift, which several people asked about. The key difference is that the Romanian version is a hinge all the way through rather than switching to a squat at the bottom. You maintain a slight knee bend and hinge forward until the dumbbells pass your knees, then drive back up. This variation puts more emphasis on the hamstrings, while the standard deadlift works the glutes more because of that squatting component at the bottom.

One cue he gave for both versions is to drag the weights along your legs the entire time. The moment the dumbbells drift away from your body, all that load shifts to your lower back. Keeping them in contact with your legs is what protects your spine.

The Push-Up and Chest Press

Maxime started this one with a question that reframed the entire exercise. When you push open a door, what angle are your arms at? Nobody pushes a door with their elbows flared straight out to the sides. You push with your arms at roughly a forty-five degree angle to your body. That is the angle your push-up should use too.

He had us find our own hand position by lying on the ground and placing our hands wherever felt most natural beside our chest. Everyone has different shoulder widths and arm lengths, so there is no single correct hand placement. But that forty-five degree angle between the arm and the torso should feel familiar because it mirrors how you actually push things in real life.

The progression he laid out for beginners was smart. If a regular push-up is too hard, start against a wall. Same form, same angles, just a much lighter load. When the wall gets easy, move to the kitchen counter. When that gets easy, use a chair or bench. Then move to the floor on your knees. Then a full push-up. Each step slightly increases the percentage of your bodyweight you are pressing.

He recommended ten to twenty repetitions for the chest, with a good reason behind that range. Rarely in your daily life will you need to push something incredibly heavy a single time. What you need is the muscular endurance to push and lift things repeatedly throughout the day.

For people with wrist issues, he offered the floor chest press as an alternative. Lying on your back with dumbbells, you press them up until they lightly touch at the top, then lower them back down at a forty-five degree angle until they lightly touch the ground. The key word there is lightly. You never release the tension at the bottom. And Maxime had one of his memorable coaching analogies for the top of the movement. Pretend there is an orange between your chest muscles, and squeeze it hard enough to make orange juice. That squeeze at the top is what ensures the chest is actually doing the work.

The mistake he sees most often, whether on push-ups or chest press, is people trying to get extra range of motion by letting their shoulders roll forward. Those extra two or three inches at the top feel like you are working harder, but all that tension is going into the front of your shoulder, into the ligaments and tendons, not into the chest muscle you are trying to strengthen. Keep the shoulders locked back and down, and accept the slightly shorter range of motion. It is doing far more for you.

The Bent-Over Row

This exercise balances out all the pushing you do with the chest and shoulders. If you only train the front of your body, you end up with that rounded, hunched-forward posture that becomes harder to reverse the longer you let it develop.

The starting position is a hip hinge, leaning forward past forty-five degrees with a slight bend in the knees. Your arms hang straight down in front of you with the weights. And here is where Maxime’s coaching really clicked for the audience. Your hands, he said, are just hooks. They are not doing the pulling. If he could duct-tape the dumbbells to your wrists, the exercise would feel exactly the same, because this is a back exercise, not an arm exercise.

To initiate the pull, he used an image that stuck with me. Imagine there is a string attached to the back of each elbow, and someone behind you is pulling those strings. You are not muscling the weights up with your biceps. You are driving your elbows backward and squeezing your shoulder blades together.

Then came the orange juice analogy again. This time the orange is between your shoulder blades. Pull those elbows back, squeeze the orange, make the juice. The squeeze at the top is where the real work happens.

Where you pull the weight matters too. Pulling up toward your chest turns it into more of an upper-back exercise. Maxime recommended pulling to about belly button level, which engages the largest section of the back musculature and gives you the most benefit from a single exercise.

For beginners who do not yet have the lower back strength to hold the hinged position for ten to fifteen repetitions, he suggested using a resistance band anchored to a door handle. You can perform the exact same pulling motion while standing upright, which removes the lower back demand entirely until you build up to the full bent-over version.

The Shoulder Press

The final exercise covers overhead pressing, the movement you use every time you put something on a high shelf, lift a suitcase into an overhead bin, or hoist a box above your head.

Maxime started with a practical observation. He has never in his life picked up a box with his arms flared straight out to the sides. Nobody has. You always hold things close, with your arms at about forty-five degrees in front of you. That is your starting position for the press.

From there, you push the dumbbells upward, and as they pass the ninety-degree mark at your elbows, you begin to rotate them outward so that you finish with the weights touching directly on top of your head. Not in front of your head. Directly above it. If you dropped the weight from the top position, it should land right on your skull. A vivid cue, though he was quick to add that you should not actually test that one at home.

The reason for finishing directly overhead is the same principle that runs through every exercise in this session. If the weight finishes in front of you, your lower back has to compensate for the load being away from your center of gravity. Directly overhead means the weight stacks over your spine, and your skeleton supports it rather than your back muscles straining to hold it in place.

For beginners, no weights at all. Maxime shared a combination workout he calls “prison push-ups” that he has led on cruises. You do one push-up on your knees, then one shoulder press with no weight. Then two of each. Then three. All the way up to ten, and then back down to zero. By the end of that sequence, even with zero weight, people cannot lift their arms for one more press. Bodyweight alone is more than enough to get started.

What Connects All Five

If you watched Maxime work through these exercises, you probably noticed the same cues coming up over and over. Core tight on every movement. Shoulders pulled back and locked into the joint. Knees tracking outward on the lower body exercises. No overextending at the end of any range of motion. These are not five separate exercises so much as one integrated approach to keeping your body functional and protected.

The other theme that ran through the session was starting where you actually are, not where you think you should be. Wall push-ups are real push-ups. Squats to a chair are real squats. Rows with cans of chickpeas are real rows. The weight and difficulty will increase as your body adapts, but the form and the cues remain exactly the same whether you are pressing five pounds or fifty.

Maxime also made a point about mind-muscle connection that is worth sitting with. When you are new to an exercise, your muscles may not fire the way they are supposed to. You do a back exercise and feel it mostly in your arms. You do a chest press and feel it in your shoulders. Higher repetitions with lighter weight give your nervous system time to learn how to activate the right muscles. Once that connection is built, you can start adding load. Skipping that step is how people end up with sore joints and confused results.

Where to Find More from Maxime

Maxime and his wife are co-founders of their fitness company, and they are doing live workouts on Substack twice a month. He also writes several articles a week sharing the frameworks they have built from coaching more than 1,200 people over the past six years. He also writes a weekly “soul post” where he pulls life lessons from his own experience and turns them into frameworks that other people can use. You can find him at maximesigouin.substack.com.

The replay of our full session is available right above this article if you want to watch the demonstrations. And if you give any of these five exercises a try, start with the beginner version. Get the form right. Build the mind-muscle connection. The weight will come later. The movement patterns are what matter most.

I’ve been cooking at home long enough to know the feeling. You open the fridge at five-thirty, stare at the contents, and realize you’re about to spend the next 45 minutes assembling a meal from scratch, just like you did last night, and the night before that.

Meanwhile, a restaurant kitchen is cranking out 200 plates in a single evening across 30 different dishes, and every single one tastes not just good but reliably, repeatably the same.

So what do they know that we don’t?

Chef Martin Oswald has spent 40 years in professional kitchens, and on this week’s live he let the audience in on what he calls the number one restaurant secret. It’s deceptively simple, and once you see it in action, you’ll wonder why nobody mentioned it sooner.

The Problem Every Home Cook Shares With Every Restaurant

Restaurants face the exact same challenge home cooks do. They need food to taste good, and they need it to taste good every single time. The difference is that a restaurant with 30 menu items and 90 different recipes would collapse under its own weight if every sauce, every dressing, every marinade started from zero.

So they don’t start from zero. They start from one.

One Sauce, Ten Dinners

The concept is called a mother sauce, and it works like this. You build one intensely flavored base, and then you branch it out into completely different dishes by adding one or two ingredients at a time.

Martin used a familiar example to show how this plays out in practice. Think about a cheap restaurant and a jar of mayonnaise. That single jar becomes the foundation for a ranch dressing, a chipotle aioli, an herb sauce, a creamy vinaigrette. One product, and suddenly the restaurant has ten different condiments on the menu.

The same thing happens with ketchup. Mix it with mayo and horseradish, and you’ve got a shrimp cocktail sauce. Add some smoke and vinegar, and it’s a barbecue sauce. The base stays the same. Only the final layer changes.

The genius of the approach is consistency. When your flavor foundation is already built, you don’t have to rebuild it from scratch every night. You just decide which direction to take it.

But We Can Do Better Than Ketchup

This is where Martin’s approach gets interesting for anyone trying to eat well. Commercial ketchup is mostly corn syrup. Store-bought mayonnaise is loaded with oil and sugar. Those restaurant shortcuts work for flavor consistency, but they don’t work for people watching their metabolic health.

Martin doesn’t even keep ketchup in his house. Instead, he builds mother sauces from real ingredients and controls what goes into them.

For this week’s demo, he went Southeast Asian. The base sauce was built from two types of miso, Japanese rice vinegar (he likes it because it’s fermented, though apple cider vinegar works too), fresh ginger, garlic, lime zest, lime juice, soy sauce, a touch of maple syrup, and a little water.

You can mix the whole thing together in about five minutes, and it keeps in the fridge for roughly a week. Leave out the garlic and it lasts even longer.

The key, Martin emphasized, is to make it strong. Almost too strong to eat on its own. You want it concentrated because you’re going to dilute and redirect it in different directions over the coming days.

One Mother, Four Completely Different Dishes

What happened next was the real demonstration of why this concept works in a home kitchen.

Martin took a portion of the base sauce and used it as a marinade for sliced tofu, giving each piece a full flavor profile of umami, acid, and warmth before it ever hit the pan. That same sauce, used straight, would work just as well as a marinade for salmon or any protein you prefer.

Then he took another portion and tossed it with julienned cucumbers, carrots, and radishes, adding a sprinkle of homemade furikake for a seaweed dimension. Now it was a quick pickle with a completely different flavor character than the marinated tofu, even though the two preparations shared the same foundation. He recommended letting the vegetables sit for at least ten minutes, though two hours is even better because the acid starts to break them down.

The third branch was the showstopper. Martin blended the base sauce with soaked cashews and stalks of fresh lemongrass to create a lemongrass cashew mayonnaise. He tasted it on camera and declared it better than his already-famous ginger sauce, which is saying something if you’ve ever tried that recipe. The lemongrass doesn’t overpower. It just lingers in the background and makes everything feel like summer.

And then all of it came together in a Vietnamese-inspired sandwich. Toasted bun, a generous spread of the lemongrass mayo on both sides, the marinated and seared tofu, and the pickled vegetables layered on top so that every bite gets fresh crunch and a hit of mint.

Four dishes from one jar of base sauce, and each one tasted like it belonged to a different restaurant.

The Calorie Question

Martin was upfront about the tradeoffs. Cashew-based sauces taste incredible, but nut butters run around 600 calories per hundred grams, and that adds up fast if you’re not paying attention.

His workaround for anyone managing their weight is to swap the cashews for silken tofu, which drops the calorie count to roughly 60 to 80 calories for the same amount while still giving you a creamy texture. For an even lighter option, he recommends using his cauliflower puree recipe as the base. You still get the lemongrass flavor and the creaminess, but the caloric load drops to almost nothing.

This is the kind of thinking that makes cooking for metabolic health sustainable over time. You’re not giving up flavor. You’re just choosing a smarter foundation.

Make It Last

A few practical notes from the demo worth remembering.

Lemongrass can be hard to find at some grocery stores, but Whole Foods and most Asian markets carry it. Martin’s advice is to buy a pound or two at once and freeze it. It holds its flavor well, and you won’t need a special shopping trip every time the craving hits. The same freezer logic applies to kaffir lime leaves, galangal, and curry pastes.

Roll your limes firmly on the counter before cutting them. The pressure breaks the internal cells and gets you significantly more juice. And if your limes have dried out, soak them in water overnight and they’ll rehydrate and taste like fresh ones.

Toast your sandwich buns lightly before assembling. Martin compared it to toasting nuts and seeds. Just enough heat to activate the natural oils and get a light golden color, without going so far that you damage the delicate fats. A minute on a hot pan with no oil does the job.

And the biggest takeaway from the whole session might be the batch size. In professional kitchens, Martin used to make five gallons of base sauce and split it across seven to ten different dishes over several days. At home, even a quart will transform how your week unfolds. One night it’s a noodle bowl. The next night it becomes a salad dressing or a dipping sauce for steamed vegetables. The daily stress of figuring out dinner fades because the hardest part, building flavor from scratch, is already done and waiting in the fridge.

The full recipe for Martin’s miso mother sauce recipe available on Chef Martin’s Healing Kitchen Substack.

If you’re working on reversing insulin resistance and want to cook this way consistently, Martin and I run The Habit Healers community on Skool. Inside, you’ll find Martin’s complete Healing Kitchen recipe vault with videos and an ever-growing recipe library, my Insulin Resistance Reversal Roadmap course, and a live session with me every Tuesday at 4 PM PT where we dig into exactly this kind of practical strategy. Come join us.

How hard should you actually be exercising? It turns out your own voice can tell you. In this episode I break down the talk test, a simple and free way to find your ideal moderate-intensity exercise zone, sometimes called Zone 2, with no equipment required.

I walk you through the fascinating research showing that the moment your speech shifts from comfortable to effortful lines up almost exactly with a real physiological boundary called the ventilatory threshold. This is the sweet spot where your body is working hard enough to adapt but not so hard that it breaks down. I explain why so many people stall out, either drifting along too easy to trigger any change, or grinding too hard every session and sliding toward overtraining and burnout. And I share why, when it comes to exercise for longevity, more is not always better and the benefits eventually plateau.

Then I give you three simple tools you can use anywhere: the talk test, your heart rate, and rate of perceived exertion, plus a step-by-step protocol to dial in your personal zone.

What you’ll learn in this episode:

* How the talk test pinpoints your moderate-intensity exercise zone

* Why exercising at the wrong intensity keeps you stuck on a plateau

* How to use heart rate zones and RPE as simple cross-checks

* How much exercise is actually enough for longevity

* Warning signs of overtraining and when to see your doctor

* A monthly re-tuning routine as your fitness improves

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/is-your-workout-helping-or-hurting

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

What if your bedroom thermostat is the most underused metabolic tool in your house? In this episode of The Habit Healers Podcast, I unpack what the research actually shows about brown adipose tissue, insulin sensitivity, and how a small shift in bedroom temperature at night can change your blood sugar, your energy, and how your body handles food the next day.

I walk you through a landmark four-month study where healthy men slept in rooms cooled to 66 degrees Fahrenheit and grew measurably more active brown fat in just one month, along with follow-up research in men with type 2 diabetes showing that mild cold exposure improved insulin sensitivity at a level that rivals some medications. I also explain why this happens, what brown fat actually does, and why most adults over 40 have a furnace inside them that’s been sitting idle for years.

Then I share the Thermal Lever Protocol, a simple two-week experiment built around your bedroom thermostat. No supplements, no gear, no new workouts. Just a thoughtful tweak to the environment your body recovers in every night.

What you’ll learn:

* Why brown adipose tissue is a hidden lever for metabolic health and how it differs from white fat

* How a cooler bedroom temperature for sleep can improve insulin sensitivity and overnight blood sugar

* What the research shows about cold exposure and type 2 diabetes

* A two-week Thermal Lever Protocol with daily tracking for fasting glucose and sleep quality

* Who should talk to a doctor before trying this (Raynaud’s, neuropathy, beta-blockers, insulin)

* Why your thermostat may be one of the most cost-free tools in lifestyle medicine

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/what-if-your-thermostat-is-controlling

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

Your cholesterol panel can look completely normal and still miss the cardiovascular risk that lands people in the hospital. Almost half of heart attack patients have an LDL under 100. In this episode of The Habit Healers Podcast, I walk you through the five markers that reveal what your standard lipid panel was never designed to see.

I’m Dr. Laurie Marbas, a board-certified lifestyle medicine physician, and today we’re talking about why so many people with normal cholesterol still develop heart disease. The standard lipid panel measures cholesterol inside LDL particles, but it doesn’t count the particles themselves, and it doesn’t see inflammation, genetic risk, or insulin resistance. Those are the hidden drivers where real cardiovascular risk often lives. I’ll walk you through each one, what test reveals it, what the numbers mean, and exactly what to ask your doctor. I’ll also share a calculation you can do tonight, using numbers already in your last lab report, that gives you a free window into your metabolic health.

What you’ll learn:

* Why apoB (apolipoprotein B) is a more accurate measure of cardiovascular risk than LDL cholesterol

* What Lp(a), or lipoprotein(a), is, why one in five adults has elevated levels, and why to test it once in your lifetime

* How hs-CRP reveals the chronic inflammation behind atherosclerosis and heart disease

* Why fasting insulin and HOMA-IR catch insulin resistance years before fasting glucose rises

* The free TG/HDL ratio calculation you can run tonight from your most recent lipid panel

* Lifestyle medicine strategies for improving every marker, from dietary patterns to resistance training and sleep

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/why-do-so-many-heart-attacks-happen

Check out the Habit Healers Community: https://www.skool.com/habithealers/about

PCOS just got an official new name, and if you were diagnosed back in your twenties or thirties, you need to hear what changed. After a global consensus process involving 56 medical and patient organizations, polycystic ovary syndrome has been renamed polyendocrine metabolic ovarian syndrome, or PMOS. The new name points to where the real engine of this condition has been hiding all along.

In this episode of The Habit Healers Podcast, I walk you through what the renaming actually means, why PCOS doesn’t fade after menopause the way most women have been told, and what you should be screening for in midlife. We talk about why insulin resistance drives the entire cycle, how the ovaries respond to insulin in a way no other tissue does, and what that means for your risk of fatty liver, heart disease, endometrial cancer, and prediabetes after 45. I share the specific lab tests to ask your doctor for, including the oral glucose tolerance test, fasting insulin and HOMA-IR, the triglyceride to HDL ratio, and FIB-4 for liver screening. We also cover why lean PCOS gets missed, what modest weight loss actually changes at the hormonal level, and the lifestyle steps that turn the volume down on the whole engine.

What you’ll learn:

* Why PCOS was renamed to PMOS and what the new name reveals about insulin resistance and androgen excess

* How PCOS shows up after menopause and why a diagnosis from your twenties still matters at 50

* The specific screening tests for metabolic health, fatty liver, and heart disease risk every woman with PCOS should request

* Why lean PCOS is so often missed and what to ask for if your BMI looks normal

* How modest weight loss, exercise, and insulin-friendly eating change the underlying hormonal cycle

* What the latest research says about endometrial cancer risk in PCOS and how to lower it

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/why-did-it-take-90-years-to-figureCheck out the Habit Healers Community: https://www.skool.com/habithealers/about