ESPN News August 7, 2019 PFL’s Kelvin Tiller doubles down with second shot at $1 million The intensity of the workouts in the CrossFit system is one of the reasons it has received the label “the harmful type of sport”.
Kansas City News News August 4, 2019 Tiller overcomes troubled past to inspire others Often, people think CrossFit is kind of extreme for a regular training. We answer questions about the most popular programs.