Originally Posted by 0311

Behind the back pulldowns is dangerous for your rotator cuff. It also prevents you from using maximum poundage by placing you in an awkward angle. Also, 10-15 reps won't help you loose fat and gain muscle. It is only a myth. I would say up to 8 reps. When you use alot of weights with lower reps, you gain muscle. At the same time, by intensifying your cardio sessions and dropping some carbs from your diet, you'll be more effective at loosing fat while gaining muscle mass.