Why this space matters
Physical movement is one half of a pair: Outer Development, matched by Inner Development. Together they are how a person keeps growing, and a home can either support both or quietly leave them to willpower.
The determining factor is rarely motivation. It is whether the space is ready when you are.
What most plans do with it
Home exercise usually ends up wherever there is room, a basement corner, a spare bedroom, the end of a garage. Equipment gets set up and taken down, or set up and slowly abandoned. The space was never designed for it, so using it always costs something.
What changes when it is designed consciously
A dedicated place, however small, that stays ready. Dedication is the mechanism: a space with one clear purpose becomes tuned and charged for that activity, which is exactly what a shared or makeshift setup can never be.
Good light, ideally a sunny window, since the Sunny Window Effect applies here as much as in the kitchen. Air that moves. A floor that suits the activity. And a location you pass rather than one you have to decide to visit, because the basement gym fails for reasons of geography, not discipline.
Above all, designed around what you find fun. The activity you enjoy is the one that continues.