Q: what kind of weighlifting do you have to do to lose man boobs?

A: Heavy whole-body weightlifting. Heavy weightlifting means weights heavy enough that you reach muscular failure (inability to lift another rep) in 12 or fewer reps in each set. Such heavy weightlifting will do maximum damage to your muscles which will force your body to repair them in the following days. That repair process is an extremely potent fat-burner (that's on top of the calories burned in the actual gym). Whole-body weightlifting will make sure that ALL of your muscles go through this damage-and-repair cycle maximizing the amount of energy your body spends. The focus should be on the big muscle groups such as thigs, lower and upper back, chest and shoulder. Please read my fat-loss article for more.