I diligently got up this morning to exercise after my sugar induced coma. I was doing this move with the exercise bands to mock a pull up (which I can not do). As the thought came to me, "I wonder if the band would hurt if it snapped in half. And then it happened. I have big welt marks across my chest and arm, and a nice big bruise. And the answer is, YES IT DOES HURT. Do you use exercise bands. I don't think I will use them again. I can do an imitation pull up by using a chair, but due to back injury it's harder. Maybe I just gotta avoid pull ups til my back gets stronger.