since have kid , a wife and a full time job , the last thing I want to do before or after work be to lift weight for a hour . I have not lift weight for 10 year , and have gain some in my mid-section , but still have some bulk from the past . you muscle never forget ! I buy the shake weight because of the positive review here at Amazon , and I be sure glad I do . it have be one month of do the workout nightly , and my arm be cut , my shoulder show definition , and I have lose 17 pound -lrb- with a new stricter diet to go with the shake weight -rrb- ! I would not recommend this for people with a thin build , but those with bulk , this be a excellent choice as it will tone you nicely and be a great companion to eat right ! it only take about 10 minute total -lrb- to follow the video , and then do the side-to-side exercise that be not in the video -rrb- , which be nothing . you will be please .