That's so easy! It's HIV! HIV is pretty much like AIDS which is a virus. It's the stage before you get AIDS and you're guaranteed to die.
Hope this helps!
It helps burn of calories that contains bodie fat
1) Recognize the signs of danger.
2)Calm things down.
3) Don’t leave the situation.
4) Offer alternatives.
Ask this in the physics area next time please, but turn to someone you trust or if your young an adult, like your parents or your teachers. Maybe even your friends. No matter what age tell someone and if they don't know then get medical help if they can't.