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Mark Sisson

Mark Sisson is one of the world's leading authorities on evolution-based health and fitness principles. Founded in 2006, Sisson's site MarksDailyApple.com is the 3rd ranked natural health and fitness website in the world, with over 800,000 unique visitors per month. Mark, 58, is a former fourth-place finisher in the Hawaii Ironman World Triathlon Championships. Besides blogging daily, Mark conducts seminars across North America and hosts an annual 3-day Primal retreat in California. He lives...See more

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