Nothing rounds out the perfect physique like a pair of well-defined arms and shoulders, and with its potent powerful combination of pressing, fly movements, and curling, action, this routine will leave you feeling stronger and looking sexier. Whether you want to build muscle mass or just slim and tighten what you've already got, these targeted shoulder and arm exercises will get you the results you want from Insanity Workout DVD. BuilBuild lean muscle and upper-body definition with strength-training and power moves. Are you ready? lets get going on your 60 day body transformation! take the insanity challenge.