I purchase the above Shake Weight after finally find it for a really good price . I be excite to take it home and use it to firm my arm . I do the exercise and follow the program from the include dvd for the appropriate amount of time . eventually , I notice nothing be happen !! my arm be tire , but no increase muscle tone or definition . complete Waste of money and time ! do not buy it ... you better off use normal 3-10 pound weight and do simple arm exercise . -lrb- the reviewer be compensate for post this review . however , the opinion state in the review be that of the reviewer and the reviewer alone . further , the reviewer independently select this product to review and have no affiliation with the product maker\/distributor , Amazon or the review requester . -rrb-