Do not eat grains. This includes (but is not limited to) wheat, rye, barley, oats, corn, rice, millet, bulgur, sorghum, sprouted grains, and all gluten-free pseudo-cereals like quinoa, amaranth, and buckwheat. This also includes all the ways we add wheat, corn, and rice into our foods in the form of bran, germ, starch, and so on. Again, read your labels.
The CrossFit Games are the world’s premier test to find the Fittest on Earth™. They are world-renowned as a grueling test for the toughest athletes and a thrilling experience for spectators. Since its inception in 2007, the CrossFit Games have become “one of the fastest growing sports in America,” according to Forbes. The Games season is broken up into three stages. The first stage is the Open, the largest participatory sporting competition in the world. After the Open, top athletes from each of the 18 worldwide regions qualify for the second stage of competition—Regionals. Following Regionals, the top 40 men, 40 women and 40 teams move on to the final stage of competition: the CrossFit Games. The Games present the playing field where the fittest athletes are given a chance to distinguish themselves through consistently exceptional performances across broad time and modal domains. At the end of the competition, the Fittest on Earth are crowned™. To learn more, visit Games.CrossFit.com or Facebook.com/CrossFitGames.
Overall, the diet is high in protein, moderate in fat (mainly from unsaturated fats), low-moderate in carbohydrate (specifically restricting high glycemic index carbohydrates), high in fiber, and low in sodium and refined sugars.  The monounsaturated and polyunsaturated fats (including the omega-3 fats EPA and DHA) come from marine fish, avocado, olive oil, and nuts and seeds.
Trying to devise an ideal diet by studying contemporary hunter-gatherers is difficult because of the great disparities that exist; for example, the animal-derived calorie percentage ranges from 25% for the Gwi people of southern Africa to 99% for the Alaskan Nunamiut. Descendants of populations with different diets have different genetic adaptations to those diets, such as the ability to digest sugars from starchy foods. Modern hunter-gatherers tend to exercise considerably more than modern office workers, protecting them from heart disease and diabetes, though highly processed modern foods also contribute to diabetes when those populations move into cities.
This one was hard for us to grasp, so it deserves some explanation. If a Paleo pancake calls for nothing but Whole30-approved ingredients (eggs and bananas), the flapjack is still off-limits. The Whole30 wants you to change your habits and your emotional relationship with food. "Your brain doesn't know the difference between an almond flour brownie and your mom's recipe; it just knows you crave sugar. So if you keep eating those sweets during the 30 days, your habits aren't changing," Hartwig says. Don't shoot the messenger!
You start to talk a language nobody understands – talking to a CrossFitter is like talking to somebody in a foreign language. CrossFit people oftentimes forget that nobody outside of CF understands what half the stuff they say means, so they shout out achievements or accomplishments and explain how quickly they did specific exercises…but they don’t realize nobody really cares!
CrossFit has been a full-on addiction for me. My lifestyle is so much better because of it. I eat better, feel better and look better. Every day I look forward to that hour or two after work where I can just hang out with my friends and let off some steam in a workout. The best part of this is that I get to have friendly competition with others, and most importantly myself.
This does require effort. Grocery shopping, meal planning, dining out, explaining the program to friends and family, and dealing with stress will all prove challenging at some point during your program. We’ve given you a huge number of tools, advice, and resources, but take responsibility for your own plan. Improved health, fitness, and quality of life doesn’t happen automatically just because you’re now taking a pass on bread.
In July 2016, a New York Times article on use of Instagram by dieters noted that participants in the Whole30 program had shared over one million Instagram posts using the #Whole30 hashtag, and noted that those sharing the tag were "one of seemingly endless like-minded communities," comparing it with the over 3.5 million posts under the #WeightWatchers hashtag.
Deadly Harvest: The Intimate Relationship Between Our Health and Our Food by Geoff Bond. The author is a nutritional anthropologist who has for years investigated both foods of the past and our prehistoric eating habits. Using the latest scientific research and studies of primitive tribal lifestyles, Bond first explains the actual diet that our ancestors followed--a diet that was and still is in harmony with the human species. He then describes how the foods in today's diets disrupt our biochemistry and digestive system, leading to health disorders such as allergies, arthritis, cancer, diabetes, heart disease, osteoporosis, obesity, and more. Most important, he explains the appropriate measures we can take to avoid these diseases--and even beat them back--through healthy eating. The conclusions of Deadly Harvest are that disease control happens by eating a strict low-glycemic diet, lowering the percentage of body fat you carry around, eat a diet consisting of mostly non-starchy plant-based foods, eat a low-fat diet with ample amounts of omega-3 fats, maintain good colon health, engage in regular physical activity, get some daily sunshine, and reduce chronic stress. If you do this, then diseases like cancer, heart disease, digestive problems, allergies, autoimmune diseases, brain diseases, diabetes, and obesity can be avoided. The Amazon reviews average to 5 stars.
The plan focuses on unprocessed foods and foods with very minimal, or, better yet, no added ingredients. Whole30 requires dieters to cut out a lot of items, including sugar, dairy and legumes, and then slowly reintroduce these food groups back into their diets after the 30 days. The purpose of the reintroduction phase is to see if any of the foods cut out are the culprit for any health issues.
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.”