The Ultimate Gym Omniversal

Wtf how did that run down place give birth to this many awesome people
garp the adamantium fist!
zero the world slasher !
Almight the Almighty!
the one and only the evershining master of youth the Glowin beast of konoha!
well that is gonna be answered in this novel
but first some exclusive stories
vegeta and goku have not left for decades
Saitama hair is back after tedious hair follicle exercises
hulk was banned due to constant wardrobe issues
and now.les get back to our gym newbie mc storie in making a gym for everyone where the can train anything magic techniques or their bodies