Could your body do with a spring cleanse? May 13, 2015 Articles, Liver Doctor's Articles Leave a comment 5,162 Views. Today we cannot escape environmental toxins as they are increasingly in the air, water, soil and, by extension, in the food we eat.
Sleep Stages. Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; includes Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep. Translation. Find a translation for the sleep stages definition in other languages:
TYPES AND STAGES OF SLEEP. REM SLEEP. REM sleep occurs in cycles of about 90-120 minutes throughout the night, and it accounts for up to 20-25% of total sleep time in adult humans, although the proportion decreases with age (a newborn baby may spend 80% of total sleep time in the REM stage).