7:08 AM, Saturday August 20th 2022
It varies a lot, not only from exercise to exercise but also from person to person, to the point where there can't be a specific recommended amount of time that works for all or even most situations. It comes down to your own intuition on whether or not you feel you've grasped what you needed to. If you haven't then ideally that would be identified in a critique and then you'll know what you should work on that more.