The first stage is drowsy sleep. Our muscles are active and eyes roll slowly, opening and closing moderately. Number two is “deeper sleep”, when we may twitch slightly or move about, but we are ...

The best baby lullabies: traditional Rock-a-Bye Baby. Rock-a-Bye Baby is one of the most well-known lullabies, with roots ...

Babies love lullabies, ... 12. By Nicholas Bakalar. ... REM and Deep Sleep: These important phases in your nightly routine seem to play outsize roles in cognitive health.

sleeping from 12 to 17 hours a day, toddlers between 10 and 14 hours and school-age children between 9 and 11 hours, with. teenagers needing even less at 10 hours. Deep sleep is the key component.