Demi Lovato Just Knocked Her Trainer’s Tooth Out During Mixed Martial Arts Practice

Friendly PSA: You don't want to be on Demi Lovato's bad side. Turns out, she has quite the powerful punch.

The singer, 26, just posted a video on Instagram of her mixed martial arts trainer, Jay Glazer, who's also a sports writer. Glazer is seen ringing a bell to get the rest of the gyms attention to share some seriously hardcore (and hilarious) news: Demi knocked my tooth outwith a mouthpiece! Mic. Drop.

What follows is Demi throwing her arms in the air (victoriously, ofc) and then apologizing to Glazer, who jokingly snaps back at her saying, youre not sorry! Youre not sorry at all! But dont worry, there seems to be no hard feelings here given the two hug it out at the end.

View this post on Instagram Holy shit I literally knocked @jayglazers tooth out during training this morning - while he was wearing a mouth piece!!!! Hahahahaha sorry (not sorry) Jay!!! So coach, whens my first fight?! #unbreakableperformance A post shared by Demi Lovato (@ddlovato) on Mar 5, 2019 at 11:22am PST

Even more evidence that its all fun and games-in addition to, clearly, some very hardcore training? Demis caption, where she writes, "Hahahahaha sorry (not sorry) Jay!!! So coach, whens my first fight?! "

Seriously, though, fans everywhere (*raises hand*) want to know.

In the video, Demi can be seen wearing a shirt that reads, "I'm Unbreakable Mother F*cker." Turns out, she's just repping Glazer's Los Angeles training facility, Unbreakable Performance . But let's be honest: The graphic tee's also pretty damn fitting for the artist, who was hospitalized in late July following an overdose . While spending a few months in rehab, likely during the fall, she kept a pretty low profile, only posting on Instagram in November to encourage her followers to vote.

A month later in December, Demi broke her selfie-silence of sorts again, posting a post-workout picture along with the caption, "Sweaty, messy jiu jitsu hair" and the hashtag "#nevergiveup."

View this post on Instagram Sweaty, messy jiu jitsu hair.. #BJJ #bluebelt #nevergiveup A post shared by Demi Lovato (@ddlovato) on Dec 4, 2018 at 2:58pm PST

And now with Tuesday's badass boxing vid, looks like Demi's staying focused on her "road to recovery" and getting stronger on the reg.

Thinking Glazer might want to invest in a stronger mouthguard as Demi continues on her knockout health...