... basic forms of sleep: rapid eye movement (REM) sleep and non-rapid REM (NREM) sleep. (REM sleep is sometimes called "paradoxical sleep.") Infants spend about 50% of their sleep ...

Most teens are chronically sleep deprived and try to "catch up" on their sleep by sleeping in on the weekends. Ultimately they should go to bed and wake up at the same time.

Study: 'Sexsomnia' Causes People to Have Sex in Their Sleep, If you think it's impossible to have sex while you sleep, think again, according to a new study.

... them from waking themselves with a startle reflex. However, many parents and carers find their babies quickly grow to wriggle out of their wrap, disturbing their baby?s sleep ...

Tom frequently drives over the curb and has picked up a couple of dented fenders when parking his car at the high school, and Mary, so nice when she goes out in the evenings with ...