Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding

The work "Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding" by Daniel Lieberman explores the evolutionary mismatch between our ancestral lifestyles and modern existence, particularly concerning physical activity. Lieberman, a paleoanthropologist, argues that while humans evolved for a life of constant movement, hunting, and gathering, modern developed societies involve significantly less physical exertion.12

This shift has profound implications for health, as our bodies are not adapted to sedentary lifestyles, leading to increased chronic diseases. Lieberman's research, including the endurance-running hypothesis, suggests that physical adaptations for long-distance running emerged in early humans, aiding in scavenging and hunting. Despite our evolutionary past, regular exercise, even if not something we evolved to do in its current forms, significantly improves overall fitness, muscular strength, endurance, and general well-being.134