How do levitation magic tricks work?

There are many different levitation magic tricks. One common one is to have a spectator lie on a board stretched across two chairs and then remove a chair. Another is when a spectator lies down on a board that seems to have no supports, but has one hidden beam that's perpindicular to the board, so that it is hidden by the thickness of the board. Yet another is having a half-mirror at a 45 degree angle and then have the magician secretly lie down flat, making it seem like the magician is floating, but the audience really sees the magician's reflection. Most professional magicians can use a series of mirrors or ropes to levitate an object or person, and of course you can use magnets. But there is a simple and surprisingly effective way to do it at home. By standing on the balls of your feet, if you get the angles right, it can actually seem like you are levitating. However, there will be some people who see through this trick, so I suggest not to do it in front of anyone who is not your family or close friends.