Do you ever feel so tired that you want to sleep for a few months? Scientists are searching for ways to cause human hibernation.

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Sources:
https://mosaicscience.com/story/big-sleep
http://www.bbc.co.uk/programmes/b086s64v
https://phys.org/news/2016-03-humans-hibernate.html
http://www.sciencemag.org/news/2011/02/secrets-bear-hibernation
https://blogs.scientificamerican.com/guest-blog/can-humans-hibernate-ask-the-dwarf-lemur/
https://phys.org/news/2013-05-primate-hibernation-common-previously-thought.html
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5010898/
https://pure.uva.nl/ws/files/1632134/118399_07.pdf
https://www.theguardian.com/world/2006/dec/21/japan.topstories3

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https://commons.wikimedia.org/wiki/File:Fat-tailed_dwarf_lemur.JPG
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