Another proposed title: "Why you need to be rich and have a white collar job to have time for leisure activities" Subtext: _less than 1% of rich people are active triathletes_

Some of the people with free time and money spend it on endurance activities. Some of them spend it on watching TV.

For tri-athetes: (back of envelope math, 120K a year is top 5% of income in US - source: http://graphics.wsj.com/what-percent/)

Population of US is around 325 Million. 5% is 16.25 Million.

(Total membership in the USA Triathlon organization: 116K in 2015) https://www.teamusa.org/-/media/USA_Triathlon/PDF/About-Mult...)

116000/16250000 = ~0.7%

Conclusion less than 1% of rich people love triathlons.