Chi Running : A Revolutionary Approach to Effortless, Injury-Free Running, Paperback by Dreyer, Danny; Dreyer, Katherine (CON), ISBN 1416549447, ISBN-13 9781416549444, Brand New, Free shipping in the US

A running coach and nationally ranked ultra-marathon runner draws on the principles of t'ai chi to develop a comprehensive running program that promotes greater speed and distance with less effort while preventing injuries.