this thing be complete junk . unless you be virtually incapacitate you will not get any resistance from it . it weigh literally a pound at the most . it make a god-awful annoying noise that you never hear on the infomercial . unless you upper body be so atrophied that you would have a hard time pick up a salt shaker , you be probably go to need a bit more resistance . and if you be go to waste you money on this thing , I would suggest you pick a good pair of ear plug too !