15 Minutes to Flat Abs: The Lower Back Workout for Killer Abs

Get a stronger lower back with these moves

You want abs? Don't forget about your back and your obliques. You have to have a good supporting cast of lower back and side muscles to get that all-around, ripped physique. Do these four moves from Eat This, Not That! for Abs, with about 30 seconds in between, to transform your core!

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