Modern human life in first world countries requires special time for exercise because their daily life doesn't provide enough/healthy exercise. Meanwhile, some people in world third countries no need for extra exercise because it is provided in their daily life (sometimes they work to exhaustion).
Also, most old people need to do some exercise (at least some stretching exercises) to wake up their body properly in the morning, their bodies aren't working properly after sleep (rest), their bodies aren't repaired properly (fixing).
We desire to see any exercise as a form of entertainment (not as something that it is necessary to maintain well-being); or an idle activity (automation) that doesn't require special time/effort/focus on that: the body does it for itself in an efficient way (efficient maintenance with nothing unconscious).
