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.)
The paleo diet is promoted as a way of improving health. There is some evidence that following this diet may lead to improvements in terms of body composition and metabolic effects compared with the typical Western diet or compared with diets recommended by national nutritional guidelines. There is no good evidence that the diet helps with weight loss, other than through the normal mechanisms of calorie restriction. Following the paleo diet can lead to nutritional deficiencies such as an inadequate calcium intake, and side effects can include weakness, diarrhea, and headaches.
One larger randomized controlled trial followed 70 post-menopausal Swedish women with obesity for two years, who were placed on either a Paleo diet or a Nordic Nutrition Recommendations (NNR) diet.  The Paleo diet provided 30% of total calories from protein, 40% fat (from mostly monounsaturated and polyunsaturated fats) and 30% carbohydrates. It included lean meats, fish, eggs, vegetables, fruits, berries, nuts, avocado, and olive oil. The NNR diet provided less protein and fat but more carbohydrate with 15% protein, 25-30% fat, and 55-60% carbohydrates, including foods similar to the Paleo diet but also low-fat dairy products and high-fiber grains. Both groups significantly decreased fat mass and weight circumference at 6 and 24 months, with the Paleo diet producing greater fat loss at 6 months but not at 24 months. Triglyceride levels decreased more significantly with the Paleo diet at 6 and 24 months than the NNR diet.
Legumes are members of a large family of plants that have a seed or pod. This category includes all beans, peas, lentils, tofu and other soyfoods, and peanuts. Legumes are not allowed on paleo because of their high content of lectins and phytic acid. Similar to grains, this is a point of controversy in the scientific community. In fact, lots of research supports eating legumes as part of a healthy diet because they are low in fat and high in fiber, protein and iron.
When it comes to humans, we’re all just victims of our own biochemistry. Our brains are controlled and ruled by chemicals - from what we eat; to how and when we sleep; even to who we choose as a life partner. Biochemistry - or ‘biological chemistry’ - is concerned with all of the biochemical reactions which take place within our bodies and brains. This means that the simple act of eating a meal is actually composed of thousands of tiny...
CrossFit, Inc. founder Greg Glassman overhauled the format for the 2019 games, replacing the Regionals with CrossFit-sanctioned international qualifying events. As part of the changes, the 2019 games athletes qualify through being the top individual and team finishers from the sanctioned events, the top athlete from each country in the CrossFit Open, the top 20 overall finishers in the CrossFit Open, and four at-large athletes as chosen by CrossFit, Inc. Teams also no longer need to be created from one CrossFit-affiliated gym and can be formed from any four competitors.
In 2007, the first annual CrossFit Games were contested in Aromas, California, on a small ranch owned by the family of Games director Dave Castro. For the initial Games in 2007 and 2008, participation was open to anyone who made it to Aromas. The Games would also award an Affiliate Cup to the group from one CrossFit gym that had the best combined individual standings. In 2009, competitors had to qualify after over a hundred athletes had shown up in 2008. The athletes earned an invitation through either placing high enough in the previous year or through placing in the top worldwide in a set of qualifying events called Regionals hosted at a few CrossFit gyms. The CrossFit Games also added a separate set of team-based events for the Affiliate Cup, marking the first use of a designated Team Division, with teams of four (two men and two women).
This 2003 CrossFit Journal article captures an early conception of a universal, multi-event test of fitness that laid the foundation for CrossFit competition, including what would become the CrossFit Open and the CrossFit Games. The design requirements for such a test "included but were not limited to the following: quantifiable results; consistency with the CrossFit fitness concept; raising our commitment to improving absolute strength, relative strength, and gymnastic foundations; balancing intrinsic abilities of smaller and larger athletes; emphasizing exercises critical to and foundational to advanced training; mixing training demands within each test and, of course, over the total competition; a design that would identify an athlete’s weaknesses and possibly stand as a workout plan for improving overall fitness; and, finally, we wanted to design a competition that would be 'hard as hell.'"