ʜᴇᴀᴛ:
So you could feel warm and not freeze to death.
Pᴀɪɴ:
So you get to know if something in your body is wrong.
Ask if he wants to go the doctor and if his says yes you take him to the doctor to see if his is ok
They can influence you bad or good... sometimes they may tell u things like buying there product will make u stronger or healthier when its actually hurting u just so they can get rich.... or a good way is when they tell u healthy ways to get healthy