In Karate you use upper and lower limbs as if they were real weapons (sticks, clubs, swords).
In ancient times who practiced Karate trained to strike with hardness the makiwara.
Even in other styles affect the hands, arms, legs and feet, hitting wood, stone or iron.
Some techniques of Karate named after the area of the body that is used to strike the opponent:
Ashibo – shinbone
Haito – hand cutting, from the index
Kakato-Ashikubi – heel and the area between the ankle and the shinbone
Seiken – fist, the area of the knuckles
Shuto – hand cutting, the side of the little finger
Tetsui – hammer fist
Wan – forearm, toward the wrist