SciShow: The Wild Reasons Many Older People Wake Up So Early

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: You might think your grandma who wakes up at 4am just needs less sleep than younger people. Not so! Studies suggest there are some bizarre reasons older people rise at the crack of dawn, including something called brain sand! Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Bealer, Jacob, KatieMarie Magnone, D.A. Noe, Charles Southerland, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Scott Satovsky Jr, Sam Buck, Avi Yashchin, Ron Kakar, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, charles george, Greg ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.nia.nih.gov/health/good-nights-sleep https://academic.oup.com/sleep/article/18/6/425/2749669 https://medlineplus.gov/ency/article/004018.htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3377480/ https://www.sciencealert.com/your-body-has-trillions-of-clocks-in-its-cells https://kids.frontiersin.org/article/10.3389/frym.2019.00005 https://www.quantamagazine.org/how-the-bodys-trillions-of-clocks-keep-time-20150915 https://www.livescience.com/13666-older-people-sleep-wake-early.html https://www.nature.com/articles/497S2a.pdf?origin=ppub https://www.sciencealert.com/your-body-has-trillions-of-clocks-in-its-cells https://www.livescience.com/13666-older-people-sleep-wake-early.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5810920/ https://www.huffpost.com/entry/elderly-sleep-less-neurons_n_5692504 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017004/ https://pdfs.semanticscholar.org/b53f/75063281a94d725bf7b127387bcf776fcd1a.pdf?_ga=2.207027859.1056560949.1578503286-1667818372.1537316153 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017004/ https://www.nytimes.com/2017/07/13/science/hadza-tanzania-sleep-grandparents-evolution.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017004/#!po=25.6579 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3084079/ https://www.jbsr.be/articles/10.5334/jbr-btr.892/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3142094/


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