Martial arts styles are classified by the type of robot you must fight to learn it. Kung fu mastery causes alcoholism. Don't drink out of the same pool some nasty guy is bathing in. Snot is an adhesive. You don't want to have a bronze horse stomping on your chest.
Wooden staves make metallic sounds when tapped on stone.
Cymbal music causes physical pain. Prayer beads make excellent earplugs. A musical instrument can cut your arm off. With training a person can leap fifty or sixty feet. There is a vital nerve in your left foot.