A big part of many forms of martial art is mindfulness. One of the ways that an enemy can defeat you is by breaking your spirit — and so, you must work hard to make your spirit indomitable, unable to be shaken by minor things like insults or getting kicked in the head.

One of the ways that this can be tested, as this video shows, is by having someone throw a heavy rock at you. However, this man failed the test, not only by being visibly shaken by the blow, but by laying a fat log in his trousers during the recovery.