At 61 years old, Megadeth frontman Dave Mustaine is remaining active and just ranked up to a brown belt in the martial art of Brazilian Jiu Jitsu. The fighting style is seen a lot in mixed martial arts and requires a lot of grappling, ground fighting, and submissions.

Instructor Reggie Almelda, who runs Gracie Barra Spring Hill BJJ & Self-Defense in Tennesee, promoted Mustaine to brown belt roughly two years after the guitarist/singer earned his blue belt. In Brazillian Jiu Jitsu, the brown belt is just one step below black belt.

Following the promotion, Almelda posted the news to his Instagram page, stating the following:

“Congratulations @davemustaine. All of us know how hard is to stay focus and work towards our goals. But with small and steady paces we will get there ! One step closer ! #brownbelt #backstagebjj #ontheroad #bjj #graciebarra #iamgbsh #iamgbctn #megadeth #metal #guitar #music”.

Mustaine is no stranger to self-defense and martial arts, as he’s also studied taekwondo since 1999.

So yeah, don’t go around picking fights with a 61 year old Dave Mustaine unless you want to get choked out.