When San Francisco 49ers quarterback Colin Kaepernick led his team to victory over the Green Bay Packers on Sunday, the game-time temperature at Lambeau Field was 5 degrees—and that isn't counting the wind chill. Local health officials were advising people to stay inside as hypothermia and frostbite could occur in a matter of minutes. Kaepernick's reaction to the life-threatening conditions? He didn't even bother to wear sleeves.

It is nothing new for someone to go sleeveless at a frigid football game, but this role is generally reserved for hulking, macho linemen and fans who have just polished off a pint of peppermint schnapps. It is unheard of for a quarterback to expose his arms—the body part responsible for his entire livelihood—to freezing conditions. To confirm this, the Count looked at photos of the 20 quarterbacks who participated in the 10 coldest games of the past 10 years. Kaepernick was the only one crazy enough to go sleeveless.

Kaepernick, who was born in Milwaukee, said after the game that dealing with the conditions is "more mental than anything." When asked whether he felt the weather, he said "no."

Before we debate if Kaepernick does, in fact, possess superhuman invincibility to the climate, it is important to note that he made some adjustments to his game-time wardrobe. The 49ers quarterback wore a hood under his helmet that covered his head and neck, as well as a glove on his nonthrowing hand. Of the 20 quarterbacks we surveyed, 12 wore one or two gloves and 13 had on some sort of visible protection over their head or neck.