Shiko is a traditional Japanese exercise that involves a series of leg stomping movements. It is commonly practiced by sumo wrestlers as part of their training regimen. The exercise helps to strengthen the legs, improve balance, and enhance overall body coordination. During Shiko, practitioners lift one leg and stomp it down while keeping the other leg stable. This rhythmic motion is often accompanied by deep breathing and can be performed in various stances. The practice not only builds physical strength but also fosters mental focus and discipline, essential qualities in sumo wrestling.