The cutie in our fanart Cute Red Bear Sleeps Sticker seems to be in its hibernation period. During this time, bears slow their metabolism and lower their body temperature to conserve energy. They may go without food or water for months, relying on stored fat reserves to sustain themselves. While in hibernation, bears are not fully asleep and can still wake up if disturbed, but they are in a state of torpor, a deep sleep-like state.