What is the best time for an exercise?

Preferably more than 30 minutes.

/kloc-how about 0/0 minutes?

It didn't work either.

Don't do it for so long if you just start exercising, lest your body can't keep up.

Doing it for such a long time for the first time will bring pressure to the later exercises.

Therefore, the search is gradual and slow, and exercise is a long-term persistence.

This is not temporary.