Movement as Identity: Why Lasting Fitness Comes From Life, Not Looks
Long-term fitness into the 60s and 70s isn’t mainly about genetics or discipline. Genetic factors may account for about 20–25% of longevity, with the rest shaped by lifestyle choices. The most durable exercisers move not to look good, but to stay autonomous and connected to a life they want to live. A shift from appearance-based motivation to intrinsic means—seeing movement as part of one’s identity—predicts better adherence and functional independence in later years.