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Added on the 19/01/2015 22:10:39 - Copyright : ExtremeFitness
Sean Callahan of ExtremeFitness.com with workout 4 of the XF chest and back muscle building program.
Sean Callahan of ExtremeFitness.com with workout 4 of the XF chest and back muscle building program.
Sean Callahan of ExtremeFitness.com with workout 1 of the XF chest and back muscle building program.
Sean Callahan of ExtremeFitness.com introducing the extreme muscles building chest and back program.
Personal trainer and founder of That Girl London, Christina Howells, runs through a series of quick exercises aimed at working your back and strengthening the surrounding muscles