But how do sleep cycles work? To find out, I took part in a polysomnography. This is a gold standard sleep study that helps ...
REM sleep boosts immunity, regulates emotions and develops the brain — but are you getting enough?
"Deep sleep builds your immune system, and REM sleep regulates and fine-tunes it," says Darwall-Smith agrees. During deep ...
and stage 3 — also known as delta sleep or deep sleep — is 10–40 minutes. REM sleep — when we dream — can last anywhere from 10 to 60 minutes. Though that obviously means the length of ...
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