Please choose the correct ending to complete the given sentence: Sports and Fitness: [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.

Ending1: 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. Ending2: [substeps] Leather will work as well as canvas for a break. Padding your hands in drywall is a good option, but you may be able to use wood planks or deck wood. Ending3: [substeps] Keep in mind that rough handling may be considered inappropriate if the board is much larger than your hand, and protecting yourself from calluses is not always recommended. Do not attempt to break a board that is no larger than your pointer finger when you are doing it with wide hands. Ending4: Apply thick rope to soften the wood before you start breaking boards. Take a pound of foam from your local supermarket and add it to your wood-wrap pot.

Answer format: ending1/ending2/ending3/ending4