Mark Hatmaker is the bestselling author of the MMA Mastery series, the No Holds Barred Fighting series, Boxer's Bible of Counterpunching, Boxer's Book of Conditioning & Drilling, Boxing Mastery, No Second Chance, and She's Tough. He has produced more than 40 instructional videos and he has extensive experience in the combat arts including boxing, wrestling, Jiu-jitsu, and Muay Thai. A highly regarded coach of professional and amateur fighters, law enforcement officials, and security personnel, he is also the founder of Extreme Self Protection, a research body that compiles, analyzes, and teaches the most effective Western combat methods known. He lives in Knoxville, Tennessee.