Instead of tiring yourself out and hurting your back doing 1,000 crunches to get those abs, why not try stomach vacuuming? It sounds weird, we know, but it's actually a breathing exercise that has been used for yoga and Pilates.

Rich Sturla, owner and director of personal training at Results Health & Performance in England, explains that stomach vacuuming activates and strengthens the transverse abdominis, your deepest abdominal muscle, by contracting it. Seems pretty easy, right? Watch the video below to see how it's done!
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