New E-book by Smash Gyms Head BJJ Instructor Michael Jen

We are proud to announce the release of the e-book “The Science of Submission: A Principle Based Approach to Brazilian Jiu-jitsu” by Smash Gyms Head BJJ instructor Michael Jen! This unique, one-of-a-kind book discusses the application of biomechanics, physics, and postural alignment principles to turbo charging your understanding of grappling. Enhance your training, progress faster, and decrease your chances of injury by arming yourself with the knowledge revealed in this amazing e-book!

For more information and to order, go to now!

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