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

Dear Mark: Antibiotic Recovery, Sprinting on Keto, Preparing for Bad Sleep

For today’s edition of Dear Mark, I’m answering three questions. First up, what can a person do to help their gut recover its barrier function after too many antibiotics? Are there any foods, supplements, or dietary strategies? Second, what can explain rapid fatigue during sprint sessions on a keto diet? Is this simply part of the deal, or are there modifications you can make? And finally, what do I do when I know I’m going to get a bad night’s sleep?

Let’s go:

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Dear Mark: Exercise-Induced Asthma, CBD for Diabetes, Warm-ups In the Morning

For today’s edition of Dear Mark, I’m answering three questions from readers. First, what’s the deal with exercise-induced asthma? Is there anything we can do to lessen its impact and incidence? Second, is CBD oil helpful for diabetics? And finally, do bodyweight exercises always require warm-ups? What about workouts in general—do you need to warm-up before every single session?

Let’s find out:

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Dear Mark: Protein Efficiency in Seniors, Earned Carbs, Hardgainer with Limited Time

For this week’s edition of Dear Mark, I’m answering three questions from readers. First, is the reduced protein efficiency in older adults due to inactivity, or is it something inherent to the aging process, or both? Second, how does a person know if they’ve actually “earned” any carbs? Does everyone on a keto diet earn carbs by virtue of exercising, or is there more to it? And finally, how can a hardgainer with a packed schedule all week long and limited gym time maintain what little muscle mass he’s managed to gain?

Let’s find out:

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My Favorite Way To Play: Ultimate Frisbee Workout (with Video)

I’m a believer in working hard AND playing hard. When we get stuck in patterns of overwork and overstress, we lose the important connection with our creative, intuitive, playful selves. Our work suffers and so does our happiness (which means everything else, like our relationships, will, too). Stuart Brown, one of the world’s leading experts on play, calls play a “profound biologic process.” What we all know (or used to know until modern living helped us forget) is that play is an essential component of our physical development and general well-being. From a personal standpoint, the older I get the more I recognize play as the linchpin for my own sense of vitality. As a result, I prioritize play—even above “exercise.” Fortunately, however, I’ve grown into a new relationship with fitness as a result of play. I gave up the slog of grueling training regimens decades ago now, but to this day I’m still living more deeply into a play-based fitness vision. Let me show you a bit of what that looks like for me….

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Glute and Hamstring Workout

Jessica Gouthro from Paleohacks is joining us today to offer tips for strengthening glutes and hamstrings without traditional gym equipment. Enjoy, everyone.

Strong glutes and hamstrings are more than just nice-looking legs and a booty.

The glutes and hamstrings are the strongest muscles in our skeletal muscular system. When we strengthen these muscles, we can prevent strain and injury while also enjoying a greater ability to squat deeper, lunge pain-free, push heavy objects, run faster and jump higher.

To best train those glutes and hamstrings, you’ll want to emphasize both leg curling (knee bending) and hip extension (or straightening) actions for balanced training. One of the best exercises that do this is the glute ham raise, or GHR.

Very few exercises can isolate the hamstrings and glutes without top-loading excess weight on the spine or testing your grip strength with a loaded barbell. Although you may think this exercise looks easy in comparison to a Barbell Romanian Deadlift or Hip Thrust, it is just as challenging (if not even more so) when performed correctly.

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Can Keto and Cardio Mix?

We get lots of questions about how a ketogenic diet works in the context of exercise: Is it possible to maintain one’s fitness (strength, endurance, performance) and also drop one’s carb intake to ketogenic levels? Is it advisable? Will it help me lose weight faster?
Mark already addressed some of these topics, but it’s clear that many people still feel uncertain about how to pair a keto diet with their current workout routine.

Rather than write a single behemoth post, I’m going to tackle this in two parts. For today, let me talk keto and cardio, specifically how keto works for the average fitness enthusiast who thinks more in terms of general exercise. In a couple weeks I’ll follow up with a post on keto for runners and other endurance types who tend to focus on training programs and racing.

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