

150. Daniel Lieberman — Exercised: Why Something We Never Evolved to Do is Healthy and Rewarding
7 snips Jan 5, 2021
Daniel Lieberman, a Harvard evolutionary biology professor and author, delves into the paradox that humans did not evolve to exercise but rather for physical activities necessary for survival. He discusses how modern sedentary lifestyles contribute to health issues and why understanding our evolutionary past is crucial. Lieberman also challenges traditional views on sleep and exercise, suggesting optimal sleep is around six to seven hours and advocating for a balanced approach to physical activity. He critiques BMI as a health measure, emphasizing the importance of fat distribution and the need for preventative health through diet and exercise.
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Exercise vs. Activity
- Exercise is voluntary physical activity for health and fitness, unlike general physical activity.
- Hunter-gatherers and subsistence farmers don't exercise because their daily lives provide ample activity.
Tarahumara and Exercise
- Daniel Lieberman observed the Tarahumara people's confusion about training for running.
- An elderly Tarahumara runner questioned why anyone would run unnecessarily, highlighting the difference between necessary activity and exercise.
Hunter-Gatherer Activity Levels
- Hunter-gatherers are much more active than the average American but do not perform excessive exercise.
- They achieve high activity levels through daily tasks, not intentional workouts.