Very interesting & informative!

UniqueParticle

I love learning about sleep especially since I struggle with it sometimes. Nice to learn about the different tests they used between 2 people or 1 person or even a baby; glad I subscribed to curiosity stream.

score 8/10

UniqueParticle 20 April 2019

Reprint: https://www.imdb.com/review/rw4792812/