Over the weekend, Jimmy Fallon did a Polar Plunge one in Chicago where they’ve had one of the most brutal winters in their history. Once you get into the water it’s only 32 degrees, but that’s not the problem. It’s the before and after, because they’ve spent most of the winter in the teens. He did it after making a bet with their mayor. He’d come on Jimmy’s show if Jimmy took the plunge, and he did over the weekend…in his suit and tie!