898900 Cheri D. Mah, Kenneth E. Mah, Eric J. Kezirian, and William C. Dement, «The Effects of Sleep Extension on the Athletic Performance of Collegiate Basketball Players,» SLEEP 34 (2011): 943–50.
899901 «Getting Extra Sleep Improves the Athletic Performance of Collegiate Football Players,» American Academy of Sleep Medicine, May 27, 2010, http://www.aasmnet.org.
900902 Mah, email to the author.
901903 Winter, email to the author.
902904 Ibid.
903905 Pete Carroll, email to the author, June 12, 2015.
906908 Rich Campbell, «Bears' Eyes Are Wide Open to the Advantages of Proper Sleep Habits,» Chicago Tribune, August 17, 2015, http://www.chicagotribune.com.
907909 «Grant Hill-NBA FIT Team Member,» NBA FIT, December 1, 2009, fit.nba.com.
908910 Zach McCann, «Sleep Tracking Brings New Info to Athletes,» ESPN, June 1, 2012, http://www.espn.go.com.