Denver City Council committee to consider parks permit fee today -- after Times story

... years, the growing popularity of group training programs like CrossFit has filled the parks with clumps of people doing yoga, running suicide sprints and crab-walking up and down hills until their lungs ache. On weekdays, there are the moms. Last ...

http://blogs.westword.com/latestword/2013/07/no_exercise_groups_of_any.php