CrossFit Inc. is the developer and provider of the CrossFit® Fitness Program and a recognized worldwide leader in functional fitness. Founded by Greg Glassman and built on the foundations of constantly varied, high-intensity functional movements, education and collaborative competition, CrossFit-brand workouts develop strength and fitness while cultivating community and camaraderie in each of the more than 14,000 affiliated gyms in CrossFit’s global network. CrossFit Inc. is a leading accredited certificate issuer for physical training professionals worldwide and offers specialty certificate programs in addition to its core curriculum. CrossFit Inc. publishes the CrossFit Journal, promotes physical and cognitive health and fitness through the CrossFit Kids Foundation, and created and operates the CrossFit Games, an annual competition where elite athletes compete to be named the Fittest on Earth™. To learn more, visit CrossFit.com, Facebook.com/CrossFit or YouTube.com/CrossFitHQ.

Since April 2009, millions of people have successfully completed our Whole30 program with stunning, life-changing results. This is a summary of the official rules of the Whole30. For in-depth information about planning and preparing for the program, a comprehensive FAQ, and more than 100 totally compliant recipes, refer to our New York Times bestselling book, The Whole30: The 30-Day Guide to Total Health and Food Freedom. (Or click here for an abbreviated version.)

"CrossFit is not a specialized fitness program, but a deliberate attempt to optimize physical competence in each of 10 recognized fitness domains," says founder Greg Glassman in the Foundations document. Those domains are cardiovascular and respiratory endurance, stamina, strength, flexibility, power, speed, coordination, agility, balance, and accuracy.[33]

A metaresearch group at Tilburg University in the Netherlands investigates scientists’ research methods and operations, scrutinizing questionable practices such as selective reporting of statistical tests and data massaging. The group instead advocates for practices such as preregistering studies and making experimental data immediately available for open external review and verification. Its members are optimistic that “the perverse incentives of careerist academia, to hoard data and sacrifice rigor for headline-generating findings, will ultimately be fixed.”

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