well I must say ... I read a bunch of review and hype on this item from Amazon customer so I go out and buy one . I be very disappointed with it . I watch the video , review the instruction , try it out for 24 hour and be take it back to Walgreens tomorrow for a refund . I feel this one be cheaply make and be rather a joke to try and use . maybe I be miss something here . needless to say , I be go back to walk around the football track and use free weight again . at least I know that work .