Inside “The Glass Box:” A New Look at CrossFit’s First 25 Years

In 2001, Greg Glassman, a fitness trainer in California, posted a workout on a new website, CrossFit.com. It was free for anyone with an internet connection. The workout was called “Fast and Heavy,” and it was as follows: There was no prescribed weight for the thrusters, but notes encouraged athletes to use a heavy weight and complete the workout as fast as possible.

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