Résumé de Move Your DNA

In Move Your DNA, biomechanist Katy Bowman argues that many modern health problems stem from a simple mismatch: human bodies evolved to move frequently in varied ways, but contemporary life confines us to chairs, shoes, and screens. Her central framework distinguishes movement from exercise. A daily workout, she contends, cannot offset the twenty-three hours of relative stillness that surround it, because the total load and diversity of motion across a day is what shapes tissues like bone, muscle, and fascia. Bowman introduces the concept of "cellular mechanotransduction" to explain how physical forces trigger biochemical responses in cells, and she identifies "diseases of captivity" such as chronic back pain, joint degeneration, and poor balance as consequences of restricted movement diets. The book's recurring idea of a "movement diet" parallels nutrition: just as you need varied nutrients, you need varied positions, loads, and ranges of motion. She details specific "movement nutrients" including walking, squatting, hanging, carrying, and crawling, and suggests "movement vitamins" like calf stretches or hip rotations to fill gaps. Later chapters apply these principles to real-world contexts: footwear and minimal shoes, sitting alternatives like squatting or kneeling, pregnancy, and children's development. Bowman also presents simple self-tests, such as assessing whether you can get up from the floor without using your hands, to gauge functional mobility. Rather than prescribing a single routine, she encourages readers to re-pattern daily habits—standing more, varying sitting positions, and integrating movement into ordinary tasks. The book blends evolutionary biology, biomechanics, and practical suggestions, positioning movement as a biological requirement rather than optional fitness. It became a foundational text in the "movement movement" and influenced how many readers think about posture, walking, and the human body's need for regular, diverse mechanical input.