Meet Mark

Let me introduce myself. My name is Mark Sisson. I’m 63 years young. I live and work in Malibu, California. In a past life I was a professional marathoner and triathlete. Now my life goal is to help 100 million people get healthy. I started this blog in 2006 to empower people to take full responsibility for their own health and enjoyment of life by investigating, discussing, and critically rethinking everything we’ve assumed to be true about health and wellness...

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Category: Fitness

Should You Wear a Fitness Tracker?

For a nation of supposedly obese, lazy, and sedentary layabouts, American consumers sure are interested in tracking their daily activity levels. In 2015, they bought 13.4 million dedicated activity trackers, up 50% from the previous year, and spent almost $1.5 billion on the devices. That’s in addition to the hundreds of millions of smartphones in circulation that also track your daily steps, sleep quality and duration, and calorie expenditure. From FitBit to Jawbone to Apple Watch to dozens of others, the wearable fitness-tracking gadget industry is growing quickly. Venture capital has responded, pouring billions into the wearable industry.

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7 Habits of Highly Successful Primal Endurance Athletes

Things have been busy for the Primal Endurance movement since I released the book back in December. People have been eager to learn more about this novel form of training, so we’ve been answering a lot of questions. Much like how The Primal Blueprint received a lot of attention because it bucked against Conventional Wisdom, such has been the case for Primal Endurance. Lots of head scratching, balking, but then, after learning the science and seeing the results, a healthy curiosity or full blown conversion. So what’s Primal Endurance training all about? What are the fundamentals? Who’s practicing it? And where can you learn more about it?

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Dear Mark: When Walking Is No Longer Enough; Fermented Foods and Depression

For today’s edition of Dear Mark, I’m answering two questions. First up, what happens when a brisk walk isn’t enough to attain the optimal fat-burning heart rate zone? It’s a good problem to have—better fitness—but it still needs a response. What activities can a person do to slightly increase the intensity without going over the target heart rate? And second, are fermented foods a potential cause of depression? If they have any effect on serotonin, could this cause problems rather than improvements?

Let’s go:

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10 Ways to Beat the Low-Carb Flu

The low-carb flu is real and it’s terrible. While it doesn’t kill as many as the Spanish flu of 1918 did or inspire the amount of panic seen during the 2009 swine flu epidemic, low-carb flu has dissuaded millions of people from pursuing and sticking to a healthy diet. You can laugh now that you’re fat-adapted and humming along on stored body fat, but you’ve forgotten just how terrible the transition from sugar-burning to fat-burning can be. Do any of the following symptoms sound familiar?

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Take It Easy, Increase Progress: How to Make Your Training More Primal

I recently had the pleasure of interviewing my friend and business and training partner Brad Kearns for the upcoming Primal Endurance Online digital course (more about that later). It was more of a discussion, really, and we kept coming back to the same three elements for constructing any successful training program. I’m going to present them as they came to me—as bullet points, as tangentially related thoughts. Then I’ll expand on them from there.

Without further ado…

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Dear Mark: Muscle Cramps and Parasympathetic Overtraining

For today’s edition of Dear Mark, I’m answering two questions from readers. First one comes from Debbie, a prolific hiker and backpacker who can’t seem to shake terrible thigh muscle cramps during steep climbs. She’s tried all the conventional advice. She’s taking electrolyte tabs. She’s staying hydrated. Nothing works. What does? And then, Brad wonders about parasympathetic overtraining, a type of overtraining you don’t hear much about. What does it mean and how should he respond?

Let’s go:

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