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Why Do We Need To Sleep?
Every night, we find ourselves drifting off into sleep, but no one knows exactly why that’s part of our biology. While its benefits to health and cognition are well-documented, the underlying reasons why organisms evolved to need it are not entirely clear. Some have hypothesized that it is because of brain waste clearance or cell repair, but none fully capture sleep’s complex role.
The fact that sleep is a process observed across almost all animal species hints at its profound evolutionary importance. Intriguingly, during sleep, the brain performs functions like consolidating memories and processing information, tasks less effectively done during wakefulness.
Next: The mysteries surrounding the moon’s origin.