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: Sprint

Dear Mark: Following the Money, HIIT Workouts, HIIT and ACL Recovery, Spinach, Collagen Timing

For today’s edition of Dear Mark, I’m answering six questions from readers. First, is funding from a biased source sufficient to negate a study’s results? Second, what are some good high intensity interval training workouts that people might not have considered? Third, what can someone recovering from an ACL tear do for HIIT without triggering knee pain flareups? Fourth, how do I like to eat spinach? And finally, how and when do I like to take collagen?

Let’s go:

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Exercising While Keto: 11 Tips for the Transition (and Long-Term)

People go keto for many different reasons. Some want to get better at burning fat so they have a clean, reliable source of steady energy at all times. Some people are treating a neurodegenerative disease, or trying to prevent one from occurring in the first place. Others just want to lose body fat, take advantage of the cognitive effects of ketosis, or stop seizures. Those are all common reasons to go keto. Another reason people go keto is for the benefits to physical performance.

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Interval Training For Beginners

HIIT (high-intensity interval training) was recently ranked the number one fitness trend in the American College of Sports Medicine’s 2018 worldwide survey. Little surprise to any of us who have been here a while.

People love high-intensity interval training because it’s a quick, efficient way to reap the same (or even greater) fitness benefits as a long, traditional cardio session—with generally less wear and tear, less physical stress, and (much) less time investment. It’s a core part of the Primal Blueprint approach to fitness and a consistent part of my own routine.

But I find it still intimidates beginners…particularly older men and women, those who have been inactive for years and those who are overweight.

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Women’s Fitness: Should It Change with Age?

Generally speaking, the basic Primal Blueprint for fitness and physical activity applies equally to men and women of all ages. Lifting heavy things works in everyone. Sprinting is a fantastic way—for anyone who’s able—to compress workouts and improve training efficiency. Improving one’s aerobic capacity through easy cardio doesn’t discriminate between the sexes. And everyone should walk, hike, garden, and perform as much low level physical activity as possible. These basic foundations—the 30,000 foot view of fitness—don’t really change across age or sex.

But the details do, especially for women.

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Top 10 Paleo Apps

“Apps aren’t paleo, Sisson. Grok waited for days for aurochs to wander within spear-chucking range, not overnight for the release of the iPhone X.” True. But this is the world we live in. These are the tools we have.

If you’re going to lug around an addictive piece of tech in your pocket all day, it might as well contain some apps that make living healthy and living Primal easier, rather than harder. What follows are some of the best paleo/Primal apps I’ve found. Some I use, some I don’t. They’re not all explicitly “paleo,” but they’re all at least tangentially related to this thing we call the pursuit of optimal health and happiness.

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Dear Mark: Ketosis and HIIT, Keto After Menopause, Inuit and Ketosis?

For today’s edition of Dear Mark, I’m answering a few questions from you folks. First, can a person maintain their high intensity interval training while starting a ketogenic diet? Is there anything you should watch out for? Second, is keto a good option for postmenopausal women? Though we don’t have any direct research on the subject, there is hope. And then we discuss the peculiar case of the Inuit and the missing ketones.

Let’s go:

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