Shotokan karate is a martial arts style that draws from ancient Egyptian and Chinese fighting techniques. Karate was first developed on the island of Okinawa after hundreds of years of Chinese and Japanese rule. During this period weapons were banned, and locals often had to engage in hand-to-hand combat. In 1922, an Okinawan karate fighter, Gichin Funakoshi, introduced his new fighting style, Shotokan, to the Japanese mainland. While teaching karate at Japanese universities, Funakoshi formed a friendship with Kano, the founder of modern judo. Kano's influence is thought to have shaped the development of Shotokan. Funakoshi’s son, Yoshitaka, further refined the style. He incorporated budo, a philosophy grounded in self-improvement, and other elements from Japanese free-style fighting. These additions solidified Shotokan into its own distinctive style. At the end of World War II, Funakoshi traveled to U.S. military bases across Japan and taught Shotokan to American soldiers. By the 1950s, Shotokan was the most widely practiced fighting form in Japan. Soldiers returning to the US also helped spread interest in the sport. Over the following decades, the Shotokan school spread around the world and became one of the most popular karate styles. Like other forms of karate, Shotokan combines philosophy, self-development, and physical fitness. Shotokan stances add more weight to the lower half of the body. Hip rotations power punches and strikes. Fighters may also use their elbows, knees, and palms to attack their opponents.