Proteins or polypeptides. (They are interchangeable)
Well, there are those medications on TV on ads, where they ALWAYS have these "side-effects", and the MAJORITY of them include heart-pain.
I hope I helped! :-)
Answer: when you hit a soccer ball you want to hit with the top of your foot which gives you more power. you do not want to hit the ball with your toes because you could break your toes.
