I use this after a set of pushup . I have do the dvd , but truthfully it seem like no matter how you shake it you be basically just get a upper arm workout . the principle be very old , but most be unaware of it , so it seem new to everyone . you be basically do mini-contraction , almost like a vibrate isometric move . it make a nice finisher to you pushup , but unless you be a real couch potato , you will want to do more than the ShakeWeight for you fitness routine .