bro 20 years old 14% body fat…. and you say you cant lift cause you feel you have "peeked" your normal levels….. when you go on test your BF% increases…. you can naturally incress your BF% on your own….. and trust me i know from experience the heavier the stronger if you say you use clean diet…. get up to like 18% BF and youll be way stronger if you keep lifting and then when its time to cut you can reduce your bf% by diet….. your only 20 enjoy your erections man