Harry Houdini had a trick where he would take any punch and it wouldn't affect him. Some dudes found him before his show and punched him a load of time before he could tense up ( he agreed to the punching, they didn't ambush him). He carried on with his show that night and then died of a burst appendix. The moral of this tale? If you're not well, don't go to work. Also no matter what Hagrid from Harry Potter says, you are not a wizard.