Running The Numbers: What's The Real Cost Of Your Workout?

... a way of life. He goes on trail runs five times a week, plays 64 dodgeball games a year, and takes a yoga or pitayo (pilates/tai chi/yoga) class with his wife at a gym twice a week. Instead of a run, he'll sometimes do an intense, full-body training ...

http://www.forbes.com/sites/learnvest/2013/08/02/running-the-numbers-whats-the-real-cost-of-your-workout/