Calisthenics Workout For Insane Muscle Mass If you want to build calisthenics muscle mass and bulk up, you need to pick up some heavy stuff repeatedly… or so you’re told.I’m here to tell you that you don’t. Your body alone is heavy enough to achieve that same exact goal, minus the expensive gym membership, free weights and complicated machines.Not only does bodyweight training allow you to bulk up as well as a bodybuilder, but it provides your body with more than…