How do you toughen your hands and feet for martial arts?

Answer 1

For the hands it is a good idea to hit the ropes, and make climbing up and down the rope a routine. It toughens the skin and strengthens the muscles which are both important in any martial arts.

For the feet, running barefoot might do the trick. Just remember not to run long distances, and keep off the paved roads. Neither of them is good for your joints and can cause small fractures to the bones if taken to the extreme. Karateka commonly use the Makiwara, a board covered with rope to strengthen the hands and to insure proper technique. Bundles of straw are often 'speared' with the fingers to strengthen them.