In a few months, this blog will turn 15 years of age. How time flies when one is thinking about consciousness and the brain! I think the 15-year mark is a good point at which to write a series of ...
Verywell Health on MSN
The 4 stages of sleep: What happens during each cycle
Medically reviewed by Sanja Jelic, MD Key Takeaways The sleep cycle has three NREM stages and one REM stage.Deep sleep occurs in stage 3 and is crucial for feeling refreshed.REM sleep helps in ...
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