Ive been working out since i was 15 and i am now 18.I go to the gym for abotu 4 months at a time and then sometimes stop because of certain circumstance(joined the army n all dat).when i stop and lose muscle i notice i get soem stretch marks.when i start working otu again they pretty muc go away.Ive been trying out some new muscletech poducts from gnc (anator p70,anabolic halo,nano vapor) and have notices soem massive gains 3 weeks in to using them.today when i was working out biceps and triceps, after doing about 3 eexcercises i looked at my arm and noticed a couple of little rips in the skin, liek if you get scratched lightly.im guessing that means stretch marks but its weird that i acctualy see them in progress.i wanted to know if this is bad because my muscles are growing so fast, since ive never gotten stretch marks from growing, i ussually get them when i lose muscle.so is this bad for my skin?and what can i use to get rid of them? im 5'8 170 lbs, lean