2021-08-12 - Half as Interesting - Why Humans Are Supposed to Sleep in Two 4-Hour Phases

from Dropbox
https://dl.dropboxusercontent.com:443/s/edkuzqjxqmw3k4b/2021-08-12%2520-%2520Half%2520as%2520Interesting%2520-%2520Why%2520Humans%2520Are%2520Supposed%2520to%2520Sleep%2520in%2520Two%25204-Hour%2520Phases.mp4

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