An incredible bodyweight-only fitness book written by Coss Marte, a former Lower East Side drug dealer who found purpose and inspiration in prison--by developing a kick-butt workout.

ConBody is former Lower East Side drug dealer, Coss Marte's, bodyweight-only approach to fitness. Created in prison with only the space of his own cell and no equipment to work with, Coss designed a plan that helped him go from dangerously obese with a five year prognosis to losing 70 pounds and training other inmates.

Before prison, Coss was flying high, dealing drugs, and...