Im 14 years old and almost 15 at 6'0. I've been lifting for about a year now and my flat bench max has been at 175 for months now. I work my chest every other day. Bench, 3 level incline bench, and machine flys. For bench i usually do reps of 5 5 5 3 3 at 140. Incline i do 10 rep max on all 3 levels. I can't seem to get past this plateou and im hoping for someone to give me a routine to break out of it. Ive also been using high quality N02 and amino acids before training and whey protein after. All my other muscle groups have been increasing except my curls. Also if anyone can tell me how many sets and reps i should do on a lap press to define my back. Thanks.