[header] How to break boards with your bare hands [title] Wrap boards with foam or canvas to condition your hands. [step] Before trying to break a board, you need to start toughening up your hands. Punching a slab of wood for the first time may only result in bloody knuckles, so it's best to prepare your hands before attempting the break. 
You can do this by wrapping a post or wooden board with foam. [substeps] For a tougher surface, wrap the board in canvas or twine.