How Sucking in Your Gut is Considered Exercise [VIDEO]

So you probably don't believe me but it's legit. Technically, in the fitness and body building community, it's more commonly known as the "stomach vacuum", an exercise in which you hold your internal abs in tight while holding your breath. You can find detailed information,  step-by-step instruction and all of the benefits here. Maybe I'll have to do a follow up video and show you my before and after.

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