Sleep is so important for the mind, the body, and even our spirits. Many of us hold the 8-hour a night stipulation dear to our hearts, making sure to get to bed early, or sleep in later to ensure that each minute of sleep is accounted for. But what happens when you are out on assignment creating maps for National Geographic, or preparing for an Iditarod, or rowing solo around the world?Check out a few of the sleep patterns, and unique sleeping needs of these amazing outdoor enthusiasts: Becca SkinnerEd StaffordChris BurkardJon BowenSage DonnellyBrody LevenMatt Moniz,Laura DekkerRoz Savage, and Anton Krupicka.