Are you ready for some serious core work? This is a 20-minute no-joke crash-course introduction to Vytas Baskauskas’ favorite abdominal routine. These movements are meant to touch every region of your torso and abdomen and, when done consistently, will slim and firm those hard to reach side obliques.

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*This video was originally published on the BeFiT Youtube channel. For more workout videos visit www.youtube.com/user/BeFit.