In this book, Herman Pontzer challenges conventional wisdom about metabolism, exercise, and weight loss. His groundbreaking research shows that exercise does not increase our metabolism; instead, humans burn calories within a narrow range of nearly 3,000 calories per day, regardless of activity level. This evolutionary strategy, while beneficial for survival in times of famine, contributes to modern obesity. Pontzer emphasizes that weight loss requires cutting calories and that all diets succeed or fail based on calorie intake. He also stresses the importance of exercise for maintaining optimal body function, even if it does not lead to weight loss. The book is filled with facts, memorable anecdotes, and insights into how metabolism controls various aspects of health, from fertility to immune function.
Body by Science explains the principles and benefits of high-intensity, low-frequency weight training. The book is based on peer-reviewed scientific literature and provides detailed explanations of how this type of training improves cardiovascular health, resting metabolic rate, glucose metabolism, insulin sensitivity, body composition, and more. It introduces the 'Big Five' workout routine, which involves slow movements using the largest muscle groups, and discusses the importance of proper rest and recovery. The authors also address genetic factors in muscle development and provide guidance for athletes and seniors. The book is well-organized, well-researched, and includes numerous graphs and diagrams to support its claims[2][4][5].
Born to Walk challenges the prevailing notion that running is the optimal form of exercise for health and longevity. The book delves into the negative consequences of the running boom, including overuse injuries, ineffective weight loss strategies, and the promotion of an unhealthy lifestyle. It contrasts this with the natural human imperative to walk, highlighting the numerous benefits of walking for both physical and mental well-being. The authors present a comprehensive approach to fitness that integrates walking with strength training, sprinting, and other primal movements. Ultimately, Born to Walk advocates for a more balanced and sustainable approach to fitness, emphasizing the importance of listening to your body and prioritizing overall health.
Elite athlete and author Brad Kearns discusses a transformative fitness approach as we age, emphasizing walking and gentle exercise over high-intensity workouts. Co-author of 'Born to Walk' with Mark Sisson, he argues that rigorous activities can harm aging bodies, leading to injuries. Kearns highlights the benefits of Zone One cardiovascular efforts, strength training, and the evolutionary reasons for endorphin rushes. Dr. Mindy also stresses the need for aging individuals, particularly women, to embrace activities that align with their changing bodies instead of pursuing intense, potentially harmful fitness goals.
To view full show notes, more information on our guests, resources mentioned in the episode, discount codes, transcripts, and more, visit https://drmindypelz.com/ep281
Brad Kearns is a New York Times bestselling author, former two-time US national champion and #3 world-ranked professional triathlete, and currently elite masters track and field sprinter and high jumper. He placed 2nd in the 2024 USA Masters National Championships age 55-59 high jump. His B.rad podcast is a top-10 ranked Apple Podcasts "Fitness" category show covering diet, fitness, peak performance, personal growth and longevity with Brad's carefree style and lively sense of humour. More at BradKearns.com
His 2025 book with Mark Sisson titled Born To Walk exposes the hype and broken promises of the running boom, and how walking extensively every day is a fundamental genetic expectation for human health. More at BornToWalkBook.com
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The Resetter Podcast with Dr. Mindy 
