i'm 26 years old and i always masturbate since i high school, is there a way to restore my energy after masturbate?
well if you've been masturbating for 8 years solid, it will probably take a good amount of sleep. but give it a couple weeks, and you should be feeling up to another 8 year session.
It's part of the physiological plan that you expend some energy after orgasm -- that's what happens after sex, too: all you can do is just lie there catching your breath. Your energy will return, just give it time and no rush.