eli5: How do we wake up?

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Like without alarms or any outside sources. We fall asleep cause we are tired. How does the body wake itself up?

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Anonymous 0 Comments

The brain operates with something called a circadian rhythm. It’s able to calculate and determine when things should happen, in this case waking up. The exact mechanism is unknown of course, but we do know it’s correlated with changes in brain waves.

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