Dierks recently performed in Dayton Ohio, and while getting ready for the show he took his very own polar plunge! 

Supposedly sitting in ice cold water helps him with his energy, clears his head, and strengthens his liver??  haha not really sure how it strengthens his liver, but I've heard weirder things before!

He says the water is 44 degrees, which if a pool is below 75 I'm complaining! haha! The best part is after sitting in the tub for 15 minutes he gets out and his skin is bright pink, and then he kind of limps away.

Oh and PS he's naked!