File :-(, x, )
Anonymous
Stomach Vacuums. Do they work? In the past week I have added them to my routine and while I could swear my waist has tightened, this may be purely placebo. Has anyone experience with them?

link
http://www.bodybuilding.com/fun/ms-fit5.htm
>> Anonymous
It's called sucking in your gut and holding it, I've done it all my life, no real change(?)