*Brian McKenzie and Melanie Rapino, “Commuting in the United States: 2009 American Community Survey Reports,” U.S. Census Bureau, ACS-15, September 2011, http://www.census.gov/prod/2011pubs/acs–15.pdf.

*Brian McKenzie, “Modes Less Traveled: Bicycling and Walking to Work in the United States: 2008–2012,” U.S. Census Bureau, American Community Survey Reports, May 2014, ACS-25, http://www.census.gov/hhes/commuting/files/2014/acs–25.pdf.

*Lindsay Olson, “Sitting Disease: The Slow, Silent and Sedentary Killer of the American Workforce,” U.S. News & World Report, August 22, 2013, http://money.usnews.com/money/blogs/outside-voices-careers/2013/08/22/are-you-suffering-from-sitting-disease.

*Thomas W. Myers, Anatomy Trains: Myofascial Meridians for Manual and Movement Therapists, Kindle ed. (N.p.: Elsevier Health Sciences, 2013), p. 35.