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Added on the 03/04/2014 21:00:50 - Copyright : ExtremeFitness
Sean Callahan of ExtremeFitness.com demonstrates the one minute sit up challenge.
Tanner Martty of ExtremeFitness.com demonstrating straight leg sit ups.
Madeline Mosier of ExtremeFitness.com demonstrating the strict pull up.
Richard Maillard of ExtremeFitness.com demonstrating the decline push up.
Madeline Mosier of ExtremeFitness.com performing crossft style hanging L-sits.