This post first seen at Graciemag.com If you want to learn Jiu-Jitsu from one of the best competitors of all times, you have to go down to Jacksonville, Florida, on July 16. Seven-time world champion (Gi) and three-time ADCC champion Hannette Staack will be at Jacksonville Gracie Jiu-Jitsu for a seminar. The investment is $50. […]