Ive been injecting in the ass on both of my cycles, i tried the shoulder but it was fkin sore for 2 weeks, ( 1 inch) im looking for other muscles that wont cramp up because i cant afford to miss a day of training. I dont think i want to do the glutes or calves or thighes. IM lookin for an upper body muscle. Tricep, bicep, traps, chest, delts???