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.
Most deep sleep occurs during the first two sleep cycles, with the greatest amount of deep sleep typically occurring in the first cycle. As the night progresses, deep sleep decreases and is replaced by the lighter stage 2 sleep and there is an increasing amount of REM sleep toward morning.