Resources:
http://www.rwjf.org/en/library/research/2011/09/retirement-and-health-poll.html
http://www.geoba.se/population.php?pc=world&type=15
http://www.nextavenue.org/the-secret-to-a-happier-healthier-life-just-retire/
https://www.ncoa.org/news/usoa-survey/2012-2013-results/
https://www.betterment.com/resources/retirement/planning-ahead/retiring-as-a-couple/
https://www.dol.gov/sites/default/files/ebsa/about-ebsa/our-activities/resource-center/publications/top10ways.pdf
https://www.mysavingsatwork.com/atwork/1104818723638/1104818723684/1115701245945.htm
http://money.usnews.com/money/blogs/on-retirement/articles/2016-05-16/5-secrets-to-happiness-in-retirement
https://www.fidelity.com/static/dcle/welcome/documents/CouplesRetirementStudy.pdf
