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).
Then, in a sense dreams provide clues to the person's problems, concerns, and emotions (Plotnik, 1993). Dreaming sounds like it is the best part of sleeping. There are still a lot of unanswered questions about the reasons for sleep and dreams, their exact functions, and how physiological processes are involved.