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).
Medication, warm baths, exercise, and learning ways to relax can help. Rapid eye movement sleep behavior disorder, also known as REM sleep behavior disorder, is another condition that may make it harder to get a good night's sleep. REM sleep is the most active stage of sleep when dreaming often occurs. Be careful about when and how much you eat. 2  Large meals close to bedtime may keep you awake, but a light snack in the evening can help you get a good nightâs sleep. 3  Stay away from caffeine late in the day. 4  Caffeine (found in coffee, tea, soda, and hot chocolate) can keep you awake.