Bear Grylls is an adventurer. No, really. That’s his job – to adventure. He scaled Everest when he was only 23. He has a second degree black belt in Shotokan karate. He’s hiked Himalayan mountains. He was in the UK Special Forces until he suffered a broken back from a freefall parachuting accident in Zambia. All of this, he went through before what people know him most for, his hit Discovery Channel show, Man Vs. Wild. In Mud, Sweat, and Tears, Bear Grylls talks about his life before and during the show. If you like Jon Krakauer’s Into Thin Air, you’ll probably enjoy Grylls’ page turning autobiography.