Where has this sleep chart been all our lives? Sleep – if you ask any parent, what would help make their life easier, the ...

Not to sound like a parent calling to check in, but — are you getting enough sleep? It’s a question many of us ask ourselves after a few days of late-night Netflix or staying up to cram for exams.

During sleep, the body goes through multiple sleep cycles. Each cycle consists of four stages: three stages of non-rapid eye movement (non-REM) sleep and one stage of rapid eye movement (REM) sleep. A ...