Sweaty January and how gyms make money

It's oddly suspicious how closely this article, with a January 2015 dateline, tracks to this WP article of today:

https://news.ycombinator.com/item?id=10845466

Both even have a Colman's Mustard reference (a product I had never even heard of before). That's quite a coincidence.

Here is a nice Planet Money podcast about gym memberships http://www.npr.org/sections/money/2014/12/17/371463435/episo...