you've been lifting for 4 years? and your 16yo? Thats just insane, I hope your growth plates are alright.

These guys have you point in the right directions. Diet and training are the two most important things to improve. Then perhaps creatine if you hit a plateau.

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I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.