Health

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A new way of classifying athletes aims to quantify the thresholds that distinguish recreational athletes from their trained, highly trained, and elite brethren

Our Sweat Science columnist spent two months measuring his blood sugar around the clock. Here’s what he found.

Three types of training that will improve your speed, stride, and stamina, but won't burn you out.

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The first-ever Graphene foam hiking boot delivers unprecedented energy return and cushioning.

Improve your running by integrating these strength, mobility and balance exercises into your daily routine—so you'll be sure to do them regularly.

New big-data study digs into hitting the wall in the marathon, revealing who is most likely to crash, when, and how much it will cost you.

Even those running less get faster in races when abiding by this golden ratio of training intensity.

The Olympic medalist turned coach didn’t have time to fully prepare and almost burned out mid-quest. Here’s how she adapted and finished strong.

The latest “exercise in a bottle” study finds that plasma from exercising mice makes sedentary mice smarter. But don’t throw out your workout gear just yet.

New Year's resolutions are for the birds

Rethink your approach to work, fitness, and process as you head into the new year

This year’s predictions include fewer diets and a possible return of minimalist running shoes

Athletes like Mikaela Shiffrin have started adopting the training technique to increase endurance, muscle mass, and more

Over the past decade, research into compression sportswear has exploded. Here’s what the results reveal.

The case for marking the passage of time by running your ass off

Three pro tips to restore your childlike joy of running fast and make speedwork more enjoyable and effective

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Looking for an extra boost of motivation? Find someone to share the miles with this winter.

These days I can break a record while finishing last. Some say they find me inspiring, but I often feel like a decrepit but willing old dog who gets a pat when he tries to chase his ball.

Overcomplicating sports nutrition wastes money and time. It also perpetuates privilege.

Perfect for gifting—or treating yourself in the new year

Seasonal outdoor work seems idyllic, but it isn’t an easy lifestyle. Guides are starting to open up about the challenges of constant transitions, and new research offers insight into their unique situation.

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Expert advice for lacing up and running bold in the cold

The case for an event that’s somewhere between the Boston Marathon and the Olympic Trials

After Lawlor Coe lost his brother Hunter to tragedy, he did everything he could to avoid his pain. Then he began to run.

It’s time to break out the merino base layers and the heat-exchange breathing masks

A selection of (mostly) new titles for fans of science, endurance, fitness, and adventure

You can stay mobile even at home, counteracting hours of sitting with this plan of creative drills and work positions.

The genes that make some people vulnerable to a fatal heart stoppage may be the same ones that give them an athletic edge, researchers suggest

LA Saves Track wants to give the oldest high school in the city a facility it can be proud of

Why marathon pacing is so hard, and how can you improve your ability to pace optimally and not to hit the wall hard during the 26.2-mile challenge.

Sports medicine physicians are rethinking the relationship between damage to your body and how it feels

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Want to keep training this winter but finding it hard to motivate? Find a partner.

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The cold season can throw lots of different conditions your way, but with a little prep, you can keep training through any weather.

Getting heckled by construction workers and definitely not crying: a New York City Marathon retrospective

Mike McCastle has found a very unusual way to benefit others: by enduring agonizing physical challenges

While the benefit to giving elite women their own race seems obvious, the question of giving male marathoners a separate start is more contentious

After upgrading his medicine cabinet, one Outside editor credits the Superberry Overnight Mask with his biggest skin transformation

As skimo prepares for its Olympic debut in 2026, sports scientists explore the sport’s demands

Aerobic capacity, not speed, is usually the limiting factor in how fast you can race, even for a distance as short as the 5K.

Change offered an elite athlete an opportunity to better understand herself—and what she still wants from her sport

Your GPS watch and other gadgets are great at describing training, but prescribing it is a harder challenge

Actually, we can’t get everything we need from nature

Activities such as lifting weights, hiking, or even woodworking teach us humility and keep us grounded in reality

A visit to Eliud Kipchoge’s Kenyan training camp reveals how he dominates the marathon world

A mathematical model explains how endurance and speed come together to determine who will win a last-lap sprint

In the second edition of the Max Vert October challenge, Christopher Fisher spent ten hours a day running up and down a mountain

When you spend your youth chasing highs, what comes next? 

A new study quantifies the effects of running on technical terrain

A new study uses machine learning to quantify the effects of temperature, humidity, heat, and sun

This short track session of 400-meter repeats will help you get fit fast. Here's a beginner and an advanced version.

Make sure to include these smart, specific workouts in your half marathon training to land you that PR.

Tips and examples on how to optimally schedule your runs throughout the week

Feeling adrift in a black hole after your marathon? You’re normal, and in good company. World-class runners, coaches and sport psychologists offer their advice.

Thanks to the app’s open diary format, a race is more than just a race—it’s an opportunity for public introspection

Scientists take their equations for the energy demand of hills and rough terrain out into the real world

The food-mood connection is interesting, but the research is still in its infancy. Here’s what we know.

Take a cue from the pros and add a few mobility and strength exercises each day to prevent injury and run better.

The link between serious cycling and poor bone health is well established, but researchers are still debating what to do about it

In this excerpt from his new book ‘The Practice of Groundedness,’ our Do It Better columnist Brad Stulberg gives concrete steps to integrate exercise into your daily life

What type of weight training you should and should not do to improve your stride and make you a faster runner.

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Sound impossible? Runner Jordan Tropf has put in the work—here’s how he pulled it off.

Six science-based tips on how to best be seen while running in the dark.

Chances are pretty good that you've experienced at least one of these "injuries." Yes, you can run through them.

Over the past few years, McCastle has completed 5,804 pull-ups in a single day, pulled a 5,000-pound truck across the Mojave Desert, and climbed a rope the equivalent height of Mount Everest. How on earth has this Navy SEAL dropout accomplished some of the craziest physical feats in recent memory?

The physiological differences between men and women affect how much fluid they store, how they sweat, and how quickly they heat up. Does that matter?

Corno shares her mindful, relaxed training plan and the key workouts that have her feeling “scary good” going into the Boston Marathon.

This long hill in Falmouth, Maine, lets masters marathoner Michael Collin know he's ready for the marathon — especially Boston.

‘What It Takes’ provides an authentic glimpse of what an ultramarathon is all about, the importance of the support crew, and the strategy needed to win

The historic fall running of the Boston Marathon will place it alongside the 100th in 1996 and Boston Strong in 2014 as most memorable.

In Episode 18 of the Endurance Podcast, host Ian Sharman talks with biomechanist and ultra-runner Geoff Burns about the tech, controversies, comparisons, and benefits of today's super shoes.

A friendly reminder that worry never robs tomorrow of its sorrow, it only saps today of its joy

The upstart Swiss company is shaking things up with an unorthodox cushioning system and an emphasis on grassroots marketing

A new analysis of numerous studies sheds light on how, contrary to popular belief, running may actually build stronger cartilage. Here's what that means for training on arthritic joints.

Jeannie Rice was among headliners in the Age Group World Championships at the London Marathon. She shares how she's faster in her 70s than she was in her 60s.

Yes, people sometimes die while running. No, that doesn’t mean running is “dangerous.”

After a frustrating year, Stinson is training stronger than ever. He and coach Dathan Ritzenhein share his strategy and workouts as he aims for a Boston breakthrough.

A guide to help college students navigate the NIL sponsorships and NCAA ruling maze.

Rouse gets in 100-mile weeks around a busy schedule as she looks to PR and compete for the masters title at Boston.

Peter Bromka, 2:19 marathoner, reflects on the art, science, and sweet chaos of racing the historic Boston Marathon course.