Saw the recent men's fitness magazine like a month ago or so, and there was this article about stomach vacuums. Basically, it's where you breathe out all your air, and suck your stomach in as hard as you can for 10 seconds. Do 3 sets of 10 of those....
I was wondering if anyone had heard anything about those? It's an interesting change that's not really mentioned anywhere...
I was wondering if anyone had heard anything about those? It's an interesting change that's not really mentioned anywhere...