In Exercise: P90X Ab Ripper X Primarily Works Hip Flexors? [Archive

P90X Ab Ripper X Primarily Works Hip Flexors? [Archive] - Bodybuilding.com Forums I just did my second routine of P90X Ab Ripper X and I can barely lift my leg up. While my abs are sore, my hip flexors are in DEEP pain. In fact, my right hip flexor which I have had problems with, feel like they actually hurt rather than feel sore. The pain has kind of gone around to my back, as well. But aside tha ...Exercise