Watch Maynard James Keenan practice Brazilian jiu-jitsu

Credit: Tim CadienteIn addition to being a well-respected musician and winemaker, Maynard James Keenan is also a martial arts enthusiast. The Tool and A Perfect Circle frontman is a purple belt in Brazilian jiu-jitsu, and he talks about his passion for the sport in a video for Revolver.

In the 10-minute clip, Keenan practices his craft at a martial arts academy he co-founded in his hometown of Jerome, Arizona. He also talks about the reasons why he does jiu-jitsu: personal growth and understanding, and -- on the off chance he encounters a "drunken, blithering idiot" -- self-defense.

Keenan is currently touring the U.S. with A Perfect Circle, which released a new song called "The Doomed" last month. The band is planning to release a new album in 2018.

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