Bear Grylls is the author of over 85 books that have sold more than 15 million copies worldwide, including the No. 1 bestselling Mud, Sweat, and Tears. A former Special Forces soldier and Everest mountaineer, Bear starred in Discovery's hit TV series Man vs. Wild for seven seasons, before hosting the National Geographic Channel series, Running Wild with Bear Grylls. This show has seen him take global stars such as Julia Roberts, Ben Stiller and even President Obama on adventures into the wild.