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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, 60, 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 with his wife and children in Malibu, California.

Books by Mark Sisson

The Primal Blueprint Quick and Easy Cookbook

Delicious, primal-approved meals in under 30 minutes from the bestselling author of The Primal Blueprint.

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The 21-Day Total Body Transformation

The 21-day plan to lose weight, get stronger, fitter, leaner, and increase your daily energy levels from the international bestselling author of The Primal Blueprint.

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The Primal Blueprint

10 simple laws for effortless weight loss, a healthy immune system and boundless energy.

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