When it comes to preparing a physique for battle, no one can match Sheena's workout intensity. In this video Sheena gives her fans a small taste of what her pain threshold is like. Having so many men fail to push her to her limits, she has to push herself by pounding away at her abs and midsection. Another amazing video showcasing Sheena's incredible stamina and punching ability. Could you withstand the incredible abs attack that Sheena gives herself? Few would dare to find out!