We sleep to forget what happens during the day

Scientists have put forth the idea that one of the potential reasons we sleep is not to regain energy, but to sort out your brain so it’s good for the next day, as Karl Zimme writes for The New York Times:

A pair of papers published on Thursday in the journal Science offer evidence for another notion: We sleep to forget some of the things we learn each day.

In order to learn, we have to grow connections, or synapses, between the neurons in our brains. These connections enable neurons to send signals to one another quickly and efficiently. We store new memories in these networks.

I’m posting this right as I go to bed, so I’ll tell you later today how my synapses are.

(via Nextdraft)

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