Hiroaki Tanaka, PhD, is a professor at Fukuoka University, Japan, and the founder and director of the Fukuoka University Institute for Physical Activity. Currently he is the director of the Japanese Academic Running Society and an adviser to the Asashi running shoe company. Tanaka lives in Fukuoka, Japan.Magdalena Jackowska, a professional linguist, translator, and interpreter from Poland, is a research assistant at the Fukuoka University Institute for Physical Activity and a slow jogging instructor. She has completed more than twenty marathons and ultra-marathons all over the world, all in slow jogging style. Jackowska lives in Fukuoka, Japan.