12/10/2023 0 Comments I don t get much deep sleepIn REM sleep, brain wave recordings show similar electrical activity to being awake. "The second part of the cycle is REM sleep. Passing through these four stages of NREM sleep takes about an hour," explains Dr Lee. ![]() "Stage four is called deep sleep because it is the hardest part of the sleep cycle to wake anyone up. People who have disrupted sleep often have less deep sleep, because they don't reach the latter stages of NREM so often.
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