Ok so for like the past year I've been trying to gain muscle mass Id just be happy being toned So i started running and lifting weight at home no change in my physique. So this past January I signed up for a weight lifting and physique class at my college. We lift weights every other day, I'm lifting as much as the other guys, sometimes more(but not to often). All the other guys are gaining noticeable muscle mass even the girls are getting toned, my body? It still hasn't changed. I'm feed up with it, I eat pretty healthy Lots of proteins average fats, Take my vitamins and I've even tired creatine, my testosterone lvls are fine, I had em check. I'm at a loss and feed up. Alright buff guys and gals mold me plz!