We don’t really get why they did this other than to prove they could do it.

The clip comes from the series Running Wild With Bear Grylls, and sees singer Nick Jonas and survivalist Bear strip down to their briefs to cross a mostly frozen lake in the Sierra Nevada Mountains.

There is a lot of painful sounding breathing and grunting on Nick’s part, while Bear callsl out the motivational phrases he’s known for.

They spend almost three minutes in the water.

You feel cold just watching them.

The journey was particularly dangerous given Jonas’ diabetes, which typically causes low circulation.

You can watch the video here:

Was it worth it?