Taekwondo Master Y.K. Jeong attained black belt status long ago, but still practices the Korean martial art frequently to stay physically and mentally fit. "It's as important as eating," he says. Since 2009, Master Jeong has taught more than 400 students at his martial arts studio, Best Taekwondo Academy in Gresham, Oregon.
Shot on a Panasonic GH4 with Lumix 12-35mm and 35-100mm lenses.