More than a class, health is a lifesaver so pay attention.
Take care of mood swings by eating breakfast.
Take care of an embarrassing itch by taking shower regularly.
When someone is choking, press your fist below the person's ribs then cover it with your other hand then thrust upwards until it's dislodged.
DON'T Worry! Just look around your class, and remember...This will eventually happen to all of your classmmates!