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).
Sweet dreams: Vitamin B-6 may make people dream more vividly and help them recall the dreams the following morning, according to a study. While we supposedly all have 4-6 dreams a night it is often hard to recall them, especially in their entirety.