Additionally, school feeding programs are increasingly being viewed as a potential safety net and as a social support measure that helps keep children in school.
The first REM sleep period usually occurs about 70 to 90 minutes after we fall asleep. A complete sleep cycle takes 90 to 110 minutes on average. The first sleep cycles each night contain relatively short REM periods and long periods of deep sleep.
When Does REM Sleep Occur? Slow wave sleep comes mostly in the first half of the night, REM in the second half. REM sleep typically begins about 90 minutes after you first fall asleep, with the first REM cycle lasting about 10 minutes. Each successive REM cycle last longer, with the final REM stage lasting up to 1 hour. Most people experience three to five intervals of REM sleep each night.