Everyone has those days where they sleep a little too little, or are just plain tired.To stay awake, some people try the strangest things, like hypnosis, or hurting themselves.

• 每个人都会有睡得很少的日子，或者无缘无故很累的时候，为了保持提神，人们出尽法宝，动用催眠大法，甚至自残。