I really love my Shake Weight . I read a few review about it and people seem to really like it so I get it , too . they do have a money back guarantee and I would not have hesitate to use it if I do not like it . the Shake Weight come with a workout dvd for a 6 minute workout . I do it once a day while I be watch tv -lrb- the workout be not hard to memorize -rrb- . I usually can not even do each exercise for the recommend time because my arm hurt so much . I take before picture and after just one week of use it I take after picture and my arm look amazing . when I flex there be actually muscle now and my triceps have great definition . I wish I could upload the picture but I guess you can not do that on amazon . I never have huge arm they just have no muscle tone . the Shake Weight definitely tone you arm and it be so easy to use . yes ... it look really weird and sexual to use it but all my roommate love it now and they use it , too . I even convinced one of my guy friend to get the man 's version . hopefully it will work just as well for he as it have for I ! this be a must buy if you be lazy like I and never go to the gym but still want awesome sexy arm !