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Added on the 17/09/2014 22:11:48 - Copyright : ExtremeFitness
XF Abs and Core: Abdominal V-Up with Sean Callahan of ExtremeFitness.com
Sean Callahan of ExtremeFitness.com demonstrates the one minute sit up challenge.
Eliminate tummy bulge with Sit Ups demonstrated by Rebecca Louise Smith of ExtremeFitness.com.
Personal trainer and founder of That Girl London, Christina Howells, runs through a series of exercises aimed at strengthening your core and working the surrounding muscles
In this video, personal trainer and founder of That Girl London Christina Howells runs through a series of exercises aimed at building your stomach muscles and strengthening your core