Good health is really important and good for every person.
When we get ill and, for example, have a headache, a sore throat, a cold or something else, we should call a doctor. He takes our temperature and our pulse. He examines our heart, the part of the body where we can have a pain, and tells us what we should do. We should obey the doctor. Also, to be a helthy person we should do sport and gymnastic.
дальше сам додумай, это элементарно :)
английский всем пригодится.