Linebacker is so tough he warmed up shirtless in freezing temperatures

For most of us who don't think of frostbite as an aspiration, an idea like this isn't really one we thought possible. Enter Ryan Shazier, who decided to send a message to the sun-loving Miami Dolphins - or perhaps straight to the weather gods themselves - by warming up shirtless.

Like, actually shirtless

Somebody get Ryan's mom on the phone, because he's totally going to get grounded for this stunt.