CrossFit trademarked the phrase "Fittest on Earth" to emphasize that their grueling methodology produces the most well-rounded athletes globally.

CrossFit's core philosophy emphasizes preparing for the "unknown and unknowable," forcing competitors to train broadly rather than specializing.

Known as the CrossFit Open, this massive annual event sees hundreds of thousands of participants log their scores to rank alongside professionals.

This grueling routine is named after Navy SEAL Michael Murphy, who routinely wore heavy body armor while performing the workout on deployment.