Gekisai Ichi & Ni Gekisai (To Attack and Destroy)
The Geki Sai Katas were developed by Chojun Miyagi Sensei in 1940 as a form of physical exercise for high school boys and to help popularize Goju-Ryu among the public of Okinawa. It contains powerful, basic movements that are quite easy to interpret and learn; however many of the techniques have multiple applications. Most the movements are done with a closed fist and with full power.
In 1948, after WWII, Miyagi Sensei began to teach the Geki Sai Kata in depth as a regular part of Goju-Ryu in his own dojo. Until this time, Sanchin was the first Kata taught in Goju-Ryu. Sanchin Kata is physically and mentally a demanding Kata and requires a great deal of time and patience to learn and perform properly. The Geki Sai Katas however are easier to learn and perform, and contain dynamic techniques which are more attractive to young people.