Macro Pacing: What It Is and Why It Matters

Ever since my book How Bad Do You Want It? was published in 2015 I’ve received a steady drip of emails from struggling high school runners, and occasionally also from their coaches and parents. Last week I got one from a runner who was frustrated by a seemingly...

“The Price Is Right” Analogy of Marathon Pacing

The fall marathon season is upon us, and you know what that means: Thousands upon thousands of runners will hit the wall before they reach the finish line, slowing down precipitously over the final miles of the race and consequently falling short of their goals. But...

Eating for Endurance: A Risk-Management Perspective

A few months back, the following tweet from triathlon legend Dave Scott caught my eye: It always amazes me how folks fear a new paradigm for sports nutrition. Unless you own a sugar-based nutrition company, why WOULDN’T you experiment w/ #LCHF It works when...

Book Review: Essential Sports Nutrition

There’s no evidence that P. T. Barnum actually said, “There’s a sucker born every minute.” But if he didn’t say it, he should have, because it’s true—there is a sucker born every minute. I encounter suckers almost every day in the domain of endurance sports nutrition....

Is Periodization Overrated?

An interesting new study by researchers at the University of Western Australia investigated the effects of periodization in the training of runners. Periodization is the practice of sequencing workouts in such a way as to maximize fitness for a race of a particular...

80/20 Triathlon Is Here!

Several years ago I got an idea for a book called A High-Mileage Manifesto. The title pretty much says it all: It was intended to be a hard sell for high-volume run training and an antidote to things like CrossFit Endurance and Run Less, Run Faster, which were leading...

A Message to Endurance Athletes Who Worry a Lot about Calories

I deal with a lot of athletes—mainly women—who worry a lot about calories. In particular, they worry about eating too much. As athletes, they fear that eating too much will negatively affect their performance. But they also fret about how eating too much will affect...

Why I Encourage Athletes to Be Hard on Themselves

The conditions for this year’s Boston Marathon were famously brutal, claiming many victims among the race’s 27,000 participants. Among them was professional runner Kellyn Taylor, who dropped out at 20K with symptoms of hypothermia. In a tweet posted later that day,...

Are You Uncoachable?

The best teacher I ever had was a sociology professor at Haverford College named Mark Gould. I’ll never forget the first day of the first class I took with him. He basically spent 90 minutes scaring the shit out of the two-dozen 18- and 19-year-old students in the...

Why Endurance Training Can’t Be Reduced to a Formula

Recently I tested a prototype of a wearable device that is intended to help runners monitor and control the intensity of their runs. During my back-and-forth email communications with the product’s lead developer, he sent me a link to a study titled “Intensity- and...

The Human Body Is Not a Smartphone

Last week I received an email message from Dawn, a runner who had just purchased The Runner’s Diary, a book I authored back in 2008. Maybe “book” isn’t the right word. As the title suggests, it’s mainly just a training log, but it does offer some training and...

Why I Eat Pretty Much the Same at 47 As I Did at 32

Recently I was invited to comment on the standard breakfast menus of several top ultrarunners for an article published on the REI Co-op Journal. Most of the seven athletes who were represented consumed fairly standard high-carbohydrate fare such as oatmeal, cold...