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For any physical attribute related to athletic performance, life delivers to humanity a bell curve distribution of gifts. Fifty percent of us are below average in whichever attribute we decide to analyze, whether that be height, weight, speed, strength, or types of “body intelligence” such as balance, ccoordination, timing, depth perception, agility, etc. CrossFit is far from unique in its abject unfairness, as unfairness is a signal quality of the human condition.

Blood is made up of a solution of water and mineral ions and bioactive molecules called plasma. The solid portion of blood is made of cells, platelets, cell fragments, and very large molecules. The ratio of these two components, solid and liquid, is expressed as a percentage and is called the hematocrit. A higher hematocrit is associated with better endurance performance, but efforts to artificially elevate hematocrit can sometimes prove fatal.

Dr. Bret Scher is a board-certified cardiologist and lipidologist based in San Diego, California. He is also the medical director at DietDoctor.com, the world’s leading website on low-carb diets. Here he discusses his recommendations for how to optimize health with nutrition, mindset, and sleep habits.

Watch coverage of the third block of events of the 2020 Reebok CrossFit Games. Athletes around the world faced Nasty Nancy and Handstand Hold.

Watch coverage of the fourth and final block of events of the 2020 Reebok CrossFit Games. Athletes around the world faced Awful Annie.

Watch coverage of the first block of events from the 2020 Reebok CrossFit Games. Athletes around the world faced Friendly Fran and a 1RM Front Squat.

Watch coverage of the second block of events from the 2020 Reebok CrossFit Games. Athletes around the world faced Damn Diane and a 1,000-M Row.

Watch coverage from the CrossFit studio in California, guiding fans through an action-packed weekend of competition. The CrossFit Games begin Friday, Sept. 18. The coverage will keep you informed as scores roll in and standings are released on the CrossFit Games Leaderboard.