Tygh's interest in martial arts came at an early age, attending Kendo and Judo tournaments with his father at the Japanese Cultural Center near their home. As a teenager, he trained in Hap Do Sool, a Korean combined martial art that is common military training in Korea and was a precursor to the now popular sport of MMA.
After several years of Hap Do Sool, and some Jiu-Jitsu, Tygh began training Aikido. Aikido is a martial art which often involves blending with an attackers energy and redirecting it to take their balance and ultimately control them without doing severe harm. Created by the great Morihei Ueshiba Sensei or O-Sensei, it is often referred to as the "Way Of Harmony". In practice, it is a very fast and effective martial art, and is taught to many military and police forces the world over. Yoshinkan Aikido is considered a "hard" style, and is mandatory training for the Tokyo Riot Police.
In the fall of 2010, Tygh was tested and awarded his black belt in Yoshinkan Aikido by Keith Taylor Sensei (6th Dan), and began teaching kids and adult classes. In 2013, Runyan was also awarded his black belt in the traditional samurai sword system, Tamiya Ryu Iaijitsu by Kenny Sembokuya Sensei (4th Dan) and Abe Genkei Sensei (8th Dan). While Tygh continues to teach Aikido and Tamiya Ryu, he also trains Jiu-Jitsu at Renzo Gracie Los Angeles with Professor Shawn Williams.