In this episode of the Heart to Heart Podcast, Dr. Mike Hart sits down with Greg Mushen, a former tech professional turned health advocate, to discuss his incredible journey of transforming his body and lifestyle. Greg shares insights from his background growing up in a medical family and how early exposure to health experiments sparked his long-lasting interest in nutrition and fitness. He details his significant body transformation starting at age 47, the role of tracking macros and engaging in strength training, and the importance of key habits like walking 17,000 steps a day. The conversation also delves into the use of red light therapy, the science behind resistant starches, and maintaining a balanced routine without becoming overly dependent on health gadgets. Greg's shift from a tech-centric life to a health-focused one offers valuable lessons on maintaining physical and mental wellness.

Greg Mushen is a tech veteran turned health optimizer, fitness coach, and writer whose work explores the science of sustainable transformation, metabolic health, and longevity. After a two-decade career in technology, Greg redirected his analytical mindset toward understanding how data-driven habits and consistent routines can radically improve health and well-being.

Connect with him on LinkedIn at @GregMushen.

Links:

• InBody Scale

• Andrew Huberman, PhD

• Jocko Willink

• Lane Norton

Show Notes:

00:00 Welcome back to the Hart2Heart podcast with Dr. Mike Hart

01:00 Greg's early interest in health

02:30 The turning point: realizing the need for change

03:30 Greg's transformation and Twitter journey

04:30 Key strategies for transformation

08:00 The importance of walking and daily steps

10:00 Sustaining the transformation: tools and tips

14:23 "At first, tracking my food felt like a second job. But after six weeks, it became automatic—it stopped being effort and started being just who I am."

18:30 Mindset shifts and progress tracking

22:30 The role of LDL in health

27:00 Calories in, calories out debate

30:00 Accurate weight prediction and metabolic studies

31:00 Challenges of calorie tracking and satiation

32:00 Dr. Ted Naman's approach to calorie tracking

33:00 Impact of drinking calories and fiber intake

35:00 Complex carbs and resistant starch

41:00 Benefits of red light therapy

45:30 Nicotine use and addiction

49:00 Tech background and health experimentation

53:30 Future health technologies and personal insights

—

The Hart2Heart podcast is hosted by family physician Dr. Michael Hart, who is dedicated to

cutting through the noise and uncovering the most effective strategies for optimizing health,

longevity, and peak performance. This podcast dives deep into evidence-based approaches to

hormone balance, peptides, sleep optimization, nutrition, psychedelics, supplements, exercise

protocols, leveraging sunlight light, and de-prescribing pharmaceuticals—using medications only when absolutely necessary.

Beyond health science, we tackle the intersection of public health and politics, exposing how

Policy decisions shape our health landscape and what actionable steps people can take to reclaim control over their well-being.

Guests range from out-of-the-box thinking physicians such as Dr. Casey Means (author of "Good Energy") and Dr. Roger Sehult (Medcram lectures) to public health experts such as Dr. Jay Bhattacharya (Director of the National Institutes of Health (NIH) and Dr. Marty Mckary

(Commissioner of the Food and Drug Administration (FDA) and high-profile names such as

Zuby and Mark Sisson (Primal Blueprint and Primal Kitchen).

If you're ready to take control of your health and performance, this is the podcast for you. We cut through the jargon and deliver practical, no-BS advice that you can implement in your daily life, empowering you to make positive changes for your well-being.

Connect on social with Dr. Mike Hart:

• Instagram: @drmikehart

• Twitter: @drmikehart

• Facebook: @drmikehart