I admit I be one of those people who send the Shake Weight video around as a joke to my friend the first time I see it with the tagline : `` who the hell would actually buy this ?! '' I dismiss it as one of those stupid as see on tv product that be destine for landfill after a short-lived stint in some sucker 's living room prove it a waste of plastic . then I read a glowing review in a fitness magazine and I decide I have to give it a try . after three week , my arm be considerably stronger and more tone ! my husband still make fun of I when he see I use it but I be enjoy my new muscular arm , so I guess I will have the last laugh ! I recommend this product , but advise you to take it easy during the Shoulder Press exercise . if you feel pain in you shoulder - stop and save yourself a serious rotator cuff injury !