1. How to do that??? 2. In a punching site...I read that we should do the whip motion when punching...but at the point of contact...should tighten all our muscles...why doesn't that reduce the impact force? 3. I get the whole video but by the end(it is only a minute long), why does the ATP split; ADP and Inorganic Phosphate bind to Actin? And why does Calcium sticks to the ATP split attached...aka Tropomyosin and Troponin Complex?