Here you can learn 3 Stomach Vacuum Exercises that will shrink your waistline, improve posture, relief stress. I know, the name is quite misleading. It might give the impression of some sort of fat suction out of the stomach area or liposuction. But, that’s not the case! It’s actually a breathing technique that activates and strengthens the transversus abdominis – the deepest muscle in the abdominal region. It’s simply done by contracting it.