If you watched a Brazilian Jiu Jitsu practice from afar, you might wonder why a bunch of people were rolling around in bathrobe-looking attire speed-hugging each other. But if you take a closer look, you’ll see a remarkably technical martial art where a 120-pound woman could learn to s...

If you watched a Brazilian Jiu Jitsu practice from afar, you might wonder why a bunch of people were rolling around in...