TheFit FirstPodcast

In this episode, I sit down with entrepreneur, bestselling author, athlete, and world-renowned health educator Mark Sisson to explore the principles, strategies, and mindset behind sustained health, performance, and healthy aging. We discuss metabolic flexibility and how a practical, applied approach to nutrition can support metabolic health, physical performance, and long-term healthspan. Rather than chasing the latest trend, Mark shares his perspective on the foundational principles that continue to matter most. In the full conversation, we go deeper into exercise selection, the potential pitfalls of the modern biohacking movement, and how the pursuit of optimization can sometimes distract from the fundamentals of health and longevity. We also explore Mark’s remarkable entrepreneurial journey—from building the Primal brand and Primal Kitchen to ultimately selling the company to Kraft Heinz—and the lessons that journey offers about health, business, and building something with lasting impact. Mark has spent decades practicing what he preaches. As an athlete, author, health educator, and entrepreneur, he has continually applied the principles of health, performance, and longevity to his own life while helping shape the modern health and wellness landscape. His combination of firsthand experience, scientific curiosity, and entrepreneurial execution has made him one of the most influential voices in health and wellness—and made this a conversation I was particularly excited to have.

In this episode, I sit down with Dr. Rachel Pojednic, Director of Education at Stanford Lifestyle Medicine, whose work sits at the intersection of nutrition, exercise science, and healthy aging. We explore what the future of healthcare should look like—and why meaningful progress may depend on breaking down the traditional silos between scientific research, clinical medicine, and the wellness industry. Each field brings unique strengths, but lasting impact comes from integrating scientific rigor, clinical expertise, and personalized lifestyle interventions into a more unified approach to health. We discuss how integrated health ecosystems can incorporate personal health data, how to distinguish evidence-based strategies from overhyped wellness trends, and why nuance, scientific literacy, and critical thinking are essential for advancing health, performance, and longevity. The future of healthcare isn’t about choosing between research, medicine, or wellness. It’s about integrating the strengths of each to create a more personalized, evidence-based approach to improving health outcomes.

In this episode, I sit down with Dr. Andrew Koutnik, a research scientist whose work spans Type 1 diabetes, metabolic health, and human performance, to explore how cutting-edge science can be translated into practical strategies for improving health, preventing disease, and optimizing performance. We discuss the growing role of Continuous Glucose Monitors (CGMs) in personalized health and how real-time data can provide insight into individual responses to food, movement, and lifestyle behaviors. But as Dr. Koutnik emphasizes, data alone doesn’t improve health outcomes. The real value comes from using that information to create awareness, change behavior, and build sustainable habits. In the full conversation, we dive into the history and rising prevalence of diabetes, the impact of sedentary living on metabolic health, and how today’s food environment and broader cultural factors contribute to obesity and chronic disease. We also explore emerging research, practical strategies for improving metabolic health, and how individuals can use technology and behavioral change to take greater ownership of their health. Ultimately, optimizing health isn’t about finding the perfect metric, device, or intervention. It’s about building awareness, making better decisions, and creating behaviors that compound over time.

Success in any area of life comes down to consistency, but if you win at work and lose at home, you will ultimately be miserable. Former trial lawyer and family advisor Paul Attia reveals how the exact same frameworks used by elite performers can help anyone build a richer, more balanced life without sacrificing what matters most. In this episode of the Fit First podcast, Blake and Paul break down why you must confront the "ugly monster" of your own bad behaviors instead of looking away. Paul also shares the three daily non-negotiables—quiet stillness, finding honest brokers, and physical movement—that anyone can use to master their relationships, health, and career.

In this episode, I sit down with Chris Duffin, world-class strength athlete, engineer, inventor, and founder, to explore what it truly means to unlock human potential. Our conversation goes far beyond strength training as we discuss the intersection of physical performance, psychological resilience, and the future of health care. Chris shares his perspective on why nuanced, individualized approaches consistently outperform one-size-fits-all solutions, and how resilience is developed through intentional challenges rather than comfort. Whether you’re an athlete, healthcare professional, entrepreneur, or simply someone striving to become more capable, this episode offers practical frameworks for building a stronger body, a sharper mind, and a more resilient life

I sit down with sports medicine and rehabilitation specialist Dr. Michael Rintala, who has spent more than two decades working with elite athletes and serves as a primary instructor for Dynamic Neuromuscular Stabilization (DNS) through the Prague School of Rehabilitation. In this episode, we explore movement quality, rehabilitation, and the role of Dynamic Neuromuscular Stabilization (DNS) within a broader framework for improving performance, reducing pain, and supporting long term health. Dr. Rintala explains why lasting change rarely comes from a single modality, but instead through thoughtful assessment, progression, and addressing underlying movement patterns over time. We also discuss how movement quality influences broader health behaviors, the relationship between movement and resilience, and why restoring efficient movement may be one of the most overlooked tools for supporting performance, longevity, and healthspan. This conversation is a reminder that movement is not simply exercise. It is foundational to how we perform, how we recover, and how we maintain quality of life across the lifespan.