Sumiko wants to put her abs to the test and see how many un flexed punches she can take before she drops to her knees unable to take anymore. She starts with a warm up, doing crunches and then giving herself some un flexed belly punches while lying down. Now it’s time for the real test to begin, so she stands up and starts punching herself in her un flexed abs over and over again. She drops a few times but doesn’t give up, standing back up to take some more punches. She changes the tempo of the punches to make it more challenging. She finally drops herself for the last time with a flurry of... Show more