If Gisele Bundchen fights as well as she struts, would-be-opponents are in trouble.

The Brazilian supermodel and wife of New England Patriots quarterback Tom Brady is learning the martial art Muay Thai. Local gym Sityodtong Boston shared a video of Gisele punching and kicking a trainer during one of her sessions.

Brady is a UFC fan and a part owner of the company, so it’s no surprise Gisele would take an interest in mixed martial arts.

However, being really good at MMA, as Gisele’s training video suggests she could be, goes much further than mere interest. Maybe Ronda Rousey, Raquel Pennington and Co. should watch their backs.