432432 Maria Konnikova, «The Surprising Science of Yawning,» The New Yorker, April 14, 2014, http://www.newyorker.com.
433433 Ibid.
434434 Robert Provine, «Yawning,» American Scientist 93 (2005): 532.
435435 M-Pierre Perriol and Christelle Monaca, " 'One Person Yawning Sets Off Everyone Else', " Journal of Neurology, Neurosurgery, and Psychiatry 77 (2006): 3.
436436 Alexa Tsoulis-Reay, «What It's Like to Need Hardly Any Sleep,» New York Magazine, March 1, 2015, http://www.nymag.com.
437437 Harrison Wein, «Gene Regulates Sleep Length,» NIH Research Matters, September 21, 2009, http://www.nih.gov.
438438 Rachel E. Gross, "To Edit the Human Genome Now Would Be 'Irresponsible', " Slate, December 3, 2015, http://www.slate.com.
439439 Till Roenneberg, «Celebrate Sleep!» (panel with Arianna Huffington, Hans Ulrich Obrist, and Miriam Meckel, Digital-Life-Design Conference, Munich, Germany, January 19, 2016).
440440 Gandhi Yetish, Hillard Kaplan, Michael Gurven, Brian Wood, Herman Pontzer, Paul R. Manger, Charles Wilson, Ronald McGregor, and Jerome M. Siegel, «Natural Sleep and Its Seasonal Variations in Three Pre-Industrial Societies,» Current Biology 25 (2015): 2862–68.
441441 Jerome Siegel, email to the author, November 3, 2015.
442442 Kathryn Doyle, «Americans, Their Physicians Should Take Sleep Seriously: Chest Doctors,» Reuters, June 15, 2015, http://www.reuters.com.
443443 «Rising Prevalence of Sleep Apnea in U.S. Threatens Public Health,» American Academy of Sleep Medicine press release, September 29, 2014, http://www.aasmnet.org.