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tags: Sleep, Science, Health
length: 4:46

Summary

Studies have actually told us that sleep is critical for memory in at least three different ways.

First, we know that you need sleep before learning to actually get your brain ready.
Second, we also know that you need sleep after learning to essentially hit the save button on those new memories so that we don't forget. When we fell asleep, our brain replay all memories almost 10 times. That seems to be the second way in which sleep can actually strengthen these memories.
Final, sleep doesn't just simply strengthen individual memories, sleep will actually cleverly interconnect new memories together. And as a consequence, you can wake up the next day with a revised mind-wid web of associations, we can come up with solutions to previously impenetrable problems.

Review

After I got up in table with book pillow, I can feel study efficiency is better than before.
And, sometimes I can get answer about problems that border me when I got up.
So, I can empathize this subject. And, He's examples, sponge and rat, make me ease understanding this opinion.
But, I cannot understand why replay brain memories in sleep, how can brain link our memories?. This video didn't describe that.

Reference

hacking your memory with sleep, https://www.ted.com/talks/matt_walker_hacking_your_memory_with_sleep, Matt walker