Bear Grylls, the former host of the Discovery Channel's Emmy-nominated Man Vs. Wild, has led expeditions from Antarctica to the Arctic. He is the author of 10 books, including Mud, Sweat, and Tears, and was named the youngest-ever chief scout, head of the Scout Association, in 2009.
The adventurer and television personality has come face to face with tigers, snakes, crocodiles, and more. He's been hospitalized more times than he can count. But he wouldn't give it up for anything.