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).
A Good Night's Sleep May Mean a Good Day's Work; A Little Weight Loss May Ease Sleep Apnea; A Third of U.S. Adults Don't Get Regular Sleep; Afternoon Coffee Might Trigger a Bad Night's Sleep; Air Pollution Tied to Breathing Problems in Sleep; Air Travel Taxes Hearts of People With Sleep Apnea; Alcohol and a Good Night's Sleep Don't Mix