Another workout that most people on this site can do is this. Most users here do this workout but dont have the machine.
More like shake wank,as I think it does absultelyf*ckall for your muscles lol.(well,maybe have a stronger wank action with your wrist)
M8,if you're silly enough to believe it builds muscles like the guy in it,you're dreamin' lol.
Or have no idea how muscles are built.