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: Does Physical Activity Affect Obesity Risk?

For today’s edition of Dear Mark, I’m answering one question from a reader. It concerns the effects of physical activity on obesity.

This is an evergreen topic, a constant in the queries I receive. Is exercise necessary for weight loss? Does physical activity improve body weight? Is exercise all about burning calories, or is there something else going on?

Let’s get to it:

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Wearable Weights: Are They Worth It?

If you’re looking for an easy way to incorporate a beginning strength training practice (or just a little extra effort) into your exercise routine, wearable weights—which include weighted vests, ankle weights and wrist weights—can seem like a no-brainer. After all, you’re technically investing the same amount of time and doing the same activities but just with more effort and benefit. And you just have to slip them on and go, right?

Not exactly.

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Mark’s Resistance Band Workout at Home

I hear people say all the time they don’t work out because they can’t make it to the gym or they don’t have the right equipment. Or (the big one)…they don’t have time. As someone who’s always on-the-go, I know I have to make my workouts fit my lifestyle. For me, that means having options I can do anywhere with minimal equipment and a short time investment.

This “Road Warrior” workout is exactly that. If you have a resistance band (you can pick a set at Amazon for under $20 easily) and a floor, you’re set. It’s the ultimate do anywhere, no excuses routine. Check it out.

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How Much Exercise Do Kids Need? Plus, 30 Activities to Get Them Moving

There’s good news and bad news. The bad news is that kids aren’t getting enough physical activity.

Inadequate amounts of physical activity are a strong risk factor for obesity and metabolic dysfunction in kids.  It’s most likely causal, too, because as much as people question the usefulness of only exercising to lose weight, there’s no question that exercise and physical activity in general is important for preventing obesity from occurring. 

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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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