Hack your body

This article on '18 tricks to teach your body' is truly amazing.

Example: Pinching your nose and leaning back is a great way to stop a nosebleed -- if you don't mind choking on your own O positive. A more civil approach: Put some cotton on your upper gums -- just behind that small dent below your nose -- and press against it, hard. "Most bleeds come from the front of the septum, the cartilage wall that divides the nose," says Peter Desmarais, M.D., an ear, nose, and throat specialist at Entabeni Hospital, in Durban, South Africa. "Pressing here helps stop them."