I have always done heavier weight to gain mass. I try to keep the best form I can with the heavy weight low reps I do. But I was wondering people opinions on doing heavier wieght with low reps or do lighter wieght with perfect form with higher reps. The reason I ask this is my friend I had recently visited looked like he gained some serious size and was completely ripped. However we went to the gym and I noticed that he did a lot of concentration exercises along with pull ups and push ups. What are some of your opinions on how to gain the best mass?
