The FastFit® Podcast

In this episode, we talk about how to continue with your strength training even when joint issues enter the picture. Because living long enough means aches, old injuries, and arthritis eventually show up. Jim explains why your joints have a shelf life, how most exercise undermines them to reach the muscles, and why isokinetic training does the opposite—protecting and even strengthening your connective tissue. If joint pain has ever made you want to quit, this episode is for you.

Adherence is king. Kyle and Jim Keen explain why the best workout is the one you’ll stick to, how FastFit® removes every reason people quit, and why a plateau is really a cruising altitude worth celebrating.

The questions around peptides have shifted from “what are these?” to “I have to be on these or I’m falling behind.” We break down what peptides actually are, why most aren’t tested in humans, Jim’s own cautionary story of a testosterone crash, and why your foundation has to come first. If peptides are on your radar, listen before you spend a dime.

In this episode, we take on the “skinny fat” epidemic—the hidden health crisis behind the “skinny is back” trend. We get into why losing weight isn’t the same as getting healthy, why muscle is a vital sign, and why GLP medications are necessary but not sufficient without strength training and protein. If skinny is your only goal, this episode explains why that’ll cost you. Give it a listen.

Jim Keen and I take on the idea of “muscle confusion”—the idea that you have to constantly switch up your workouts to keep your muscles growing. Turns out muscles can’t be confused, and most of what feels like progress when you change movements is just skill learning. We also break down the study where our members beat weightlifters at exercises they never even did. Hands down, this is one of my favorite episodes we’ve ever done.

Part two with Jim Keen is all about the “digital weights” machines like Tonal that are everywhere right now. Jim explains why companies spend millions mimicking a barbell on a screen—and why that whole approach is fundamentally limited. The big takeaway: anytime you can select the resistance, it can’t match your real strength. It’s the clearest case yet for why we’re all in on isokinetics.

We kick off with a concept that genuinely tripped me up. I called Jim a few months ago convinced we’d have to change everything about how we describe our machines. His answer reframed how I think about the whole technology: the machine doesn’t adapt to you—and that’s exactly why it works. If you’ve ever wondered what “adaptive resistance” really means, listen to this one.

Nichole Wolf is back to cut through the noise on GLP-1s and hormone replacement therapy. We get into microdosing GLP-1 for inflammation (not just weight loss), why bioidentical hormones beat synthetic, and the delivery systems that actually work. But the biggest takeaway is this: fix your foundation first. I share my own story of taking a pile of supplements that were making things worse.

Hyperbaric oxygen therapy isn’t just for burn victims and divers. Nichole Wolf—certified in HBOT—explains why it’s one of the most powerful tools for reducing inflammation and healing the body.

Why does one glass of wine sometimes wreck you? Why does gluten matter even if your gut “feels fine”? Nichole Wolf explains MCAS, leaky gut, and the free steps anyone can take today.