I order one of these thing in hope that it would really work since my arm be flabby now and i be in desperate to tone they up . I be willing to try new thing and always keep a open mind , but i get the Shake Weight and literally waste my time with it . I have more success use 3 pound dumbbell than with this thing . if you wanna tone up , just get something else and not this . seriously . there be one pro to this though , it make a good gag gift : D and that exactly what i do with it and we laugh and burn it .