Tired of getting your guard passed? Look at what BJJ legend Ruben Cobrinha Charles is doing.
Improve Your Guard Retention So It Is Hardly Ever Passed: Even If You Are Older & Lack Flexibility.
41 Year Old Estonian Priit Mihkelson (It Is A Little Country Near Russia) Figures Out A System For Older Grapplers To Retain Guard Easily.
If you lack flexibility, athleticism, youth, and explosiveness this is the system for you.
