Greg Glassman and Lauren Jenai founded CrossFit, Inc. in 2000. The company was conceived a few years earlier, in 1996, as Cross-Fit. The original CrossFit gym is in Santa Cruz, California, and the first affiliated gym was CrossFit North in Seattle, Washington; there were 13 by 2005, and today there are more than 13,000. Coaches associated with CrossFit include Louie Simmons, John Welbourn, Bob Harper, and Mike Burgener.
The Paleo Diet: Eating like your ancestors doesn't guarantee you'll lose weight. While the diet emphasizes plenty of foods that are good for weight loss, such as lean protein and fruits and vegetables, you would still need to eat fewer calories to drop a few pounds. So if you're binging on nuts and fruit, you could actually gain weight on the Paleo Diet.
Grass-fed beef is often highlighted on the diet, which is promoted to contain more omega-3 fats than conventional beef (due to being fed grass instead of grain). It does contain small amounts of alpha-linolenic acid (ALA), a precursor to EPA and DHA. However, only a small proportion of ALA can be converted in the body to long-chain omega-3 fatty acids (EPA and DHA). The amount of omega-3 is also highly variable depending on the exact feeding regimen and differences in fat metabolism among cattle breeds.  In general, the amount of omega-3 in grass-fed beef is much lower than that in oily marine fish.  Cooked salmon contains 1000-2000 mg of EPA/DHA per 3-ounce portion, whereas 3 ounces of grass-fed beef contains about 20-200 mg of ALA.
We Want to Live: The Primal Diet (2005 Expanded Edition) is a book by Aajonus Vonderplanitz. His basic philosophy is that (a) food is to be eaten in a live, raw condition; and (b) a diet rich in raw fats and raw meats from natural sources is essential to health. However his diet includes massive amounts of raw dairy. From the Planets is a book review by Ralph W. Moss. The Live-Food Mailing List discusses the concepts of this book.
Cordain argues that chimpanzees and horses avoid meat, and they have big bellies that we would have if we didn’t ditch plants for meat. He also says meat increased human brain size, and decreased stomach size so we can have the six-pack abs that chimps can’t. But I looked at his endnotes with citations to research and couldn’t find the source for these theories. I also couldn’t find research showing that legumes and grains were invented by humans.
The Paleo diet is the healthiest way you can eat because it is the ONLY nutritional approach that works with your genetics to help you stay lean, strong and energetic! Research in biology, biochemistry, Ophthalmology, Dermatology and many other disciplines indicate it is our modern diet, full of refined foods, trans fats and sugar, that is at the root of degenerative diseases such as obesity, cancer, diabetes, heart disease, Parkinson’s, Alzheimer’s, depression and infertility. – Robb Wolf
I LOVE Whole30. I preach it and I live it. The reason I am only posting 3 stars is because I am really disappointed in this cookbook, which I anticipated for months. I love crockpot meals and soups, and this didn't hardly have anything like that. Most of these meals did not look very appetizing. I don't want to have to purchase odd ingredients for that 1 meal and you'll be doing that with every one of these recipes. I hope they come out with another cookbook that focuses more on altering the more common meals that we are comfortable with.
My fiancee and I did this together. It takes teamwork (if you have a family, you probably need to get them on board). It also will help if you can begin (or even complete) this diet when you have a minimum of social obligations--having office mates who eat a lot of cake or friends who drink a lot of booze WILL NOT HELP while you are on this program. Don't try to start this the week before Christmas if your family gathers to eat until they pass out. Be realistic about when you begin this. You must prepare a little bit and read the book ahead of time so you aren't just floating at sea. And, be aware: you will not be able to sufficiently screen foods made by other people!
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.
Here comes the tough love. This is for those of you who are considering taking on this life-changing month, but aren’t sure you can actually pull it off, cheat free, for a full 30 days. This is for the people who have tried this before, but who “slipped” or “fell off the wagon” or “just HAD to eat (fill in food here) because of this (fill in event here).” This is for you.