About the Author

Dr. Tom Walters is a board-certified orthopedic physical therapist who specializes in the treatment of pain and movement disorders. He is the founder of Rehab Science and dedicates his time to teaching people about human movement, pain, and how to most effectively recover from injury.


Glen Cordoza is a New York Times and Wall Street Journal bestselling author. He is one of the most published writers in the world on the topics of MMA, jiu-jitsu, Muay Thai, exercise, and fitness with twenty-six books to his credit.