You are not responsible for the universe.
You are responsible for yourself.
Unfortunately, this basic human need increasingly fades into the background with age. What does not require explanation or motivation in childhood becomes more and more a matter of discipline and reason for adults and adolescents.
Civilization diseases, such as cardiovascular complaints and back pain can be attributed to insufficient movement.
Dissatisfaction, depression and aggression can be positively influenced by exercise. The entire human unit benefits from a fit vital feeling during and after a movement unit.
Whatever the personal reason:
No time, overstimulation, not yet “right” found, no drive …
There will always be plenty of reasons to delay the start.