[Afro]

Ok, I am 5'10 189 lbs exactly.

I got a question about supplements/nutrition, and training.. more-so supplements and nutrition.

Lets say I wanted to lose weight till I was down to 155, maybe lower and lets say I wanted to be under 10% body fat as well, but I wanted to build muscle and be able to move up in weight without gaining fat, and I wanted to be around 155 with no fat as well

basically, if you watch Boxing.. I wanna be able to do what Roy Jones Jr did.. he moved up from 160 to 200 lbs

so help me out here, im basically curious to how Boxers do this (and please no smart ass answers like ahhh there all on steroids) what supplements help with this, what kind of training helps with this, what kind of diet, etc. I would appreciate the help.