수면에 관한 영어 지문 해석 부탁드려요

수면에 관한 영어 지문 해석 부탁드려요.
내용이 길어서 혼자 하려니 시간이 오래 걸리네요. 도와주시면 감사하겠습니다.
The amount of sleep each person needs is different, and is often connected to age.
In general, babies need fifteen to sixteen hours of sleep a day.
Children and teenagers need nine to ten hours, while adults need six to eight.
Over time, a lack of sleep - especially deep and REM sleep - can cause one to become sick more easily.
Doctors also think that REM sleep is very important for learning, thinking, and memory.
Scientists are continually learning more about sleep, but one thing they know for sure is this: for humans, it is as important as food and water.