An inactive state resembling deep sleep in which certain animals living in cold climates pass the winter. In hibernation, the body temperature is lowered and breathing and heart rates slow down. Hibernation protects the animal from cold and reduces the need for food during the season when food is scarce. Compare estivation.
Does Dreaming Indicate a Good Nightâs Sleep? Dreams are typically indicative of a good nightâs sleep, demonstrating that you have passed through the light sleeping phase (NREM) and entered into a deep sleep (REM).
Though a few people may not remember dreaming, it is thought that everyone dreams between 3 to 6 times per night. It is thought that each dream lasts between 5 to 20 minutes. Around 95% of dreams are forgotten by the time a person gets out of bed. Dreaming can help you learn and develop long-term memories.