The most common belt colors are: white, blue, black, and brown. This depends on training institutions and countries. The highest ranking is normally the black belt, and mostly worn by trainers ...

Now the fifth grader is a blue belt. Karate has "given him a greater ability to focus and to struggle with things that are difficult," says Terranova. Vincent puts it more simply: "Karate makes me ...

Meta CEO Mark Zuckerberg showed off his new blue belt in jiu-jitsu — the latest achievement for the amateur martial artist as he prepares for a possible cage match with his tech rival.