I was an hardgainer too... don't forget that squat is also the most "anabolic" exercise because it improve your anabolic hormones so also your arm should be better. I am at 4 cycle of HST , I'm 40 ,6 and 2, on september I was 194lbs 10,67% fat, now I am 211lbs 10,95% fat ....15lbs of...