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The unending search for a competitive edge in sports has a cost. It’s called the Red Queen effect.

Freddy Ovett, a professional cyclist with a running heritage, is taking a unique approach to the Berlin Marathon that may help you improve your running

Runners make bigger improvements following a flexible workout schedule rather than sticking with a predetermined one

A new twist in the old debate about caffeine's performance-enhancing powers suggests it helps maintain oxygen levels in the blood

Women are said to be 10 to 12 percent slower than men across distances, but a new analysis finds narrower gaps for sprinters

How far can professional coaches and a revamped diet take an average off-the-couch gravel cyclist? Pretty far, apparently.

There’s encouraging new evidence on artery stiffening and the risks of too much exercise

A new study aims to resolve long-standing debates about how much drafting helps runners, and finds that even back-of-the-packers save meaningful time

Mounting evidence suggests that women respond differently to endurance training after menopause. Could donating blood be the solution?

A deep dive into the sports science literature shows why you should be wary of results that seem too good to be true

Sure, these drink mixes are going to keep you hydrated. But which ones actually taste good?

A fitness tracker provides some insight into how the virus affected Danish cyclist Magnus Cort

A small Minnesota company believes it has developed the future of fitness tech. Now it has to teach the rest of us how to use it.

Here’s what the science says about making it to the top as quickly and efficiently as possible

A new study assesses how childbirth altered the career trajectories of the fastest marathoners in history, with encouraging results

New research explores whether the performance-boosting effects of positive self-talk can be attributed to more than just the absence of negativity

The loss of a big toenail sent Outside columnist Brendan Leonard into an existential crisis—but maybe not for the reason you think

Ten great reads for the beach (between workouts) or the airport (between flight delays)

A team of Canadian Olympic sports psychologists tries to nail down the intangible “it”

A new study compares active and passive interval recoveries, but physiology isn’t the only factor to consider

The algorithms used to estimate your training load have some fundamental flaws, scientists say

Most people run the same pace regardless of how far they’re running, according to new research

The Swiss Alps are home to an incredible new hut-to-hut runners’ route called the Via Valais. It’s a little demanding—150 miles, nine stages, and 42,000 feet of elevation gain—but if you can take it on, you’re guaranteed one of the most spectacular adventures of your life.

Like the two-hour marathon chase, next month’s assault on the seven- and eight-hour Ironman barriers will require some rule-bending

After an extended break from competition, the masters champ has already broken a world record on the track this year. Here are four strategies she uses to run forever.

A squeeze of honey, a squirt of ketchup, and other non-solids you can toss down your gullet if you so choose

Runners smack the ground harder—but get injured less—in more cushioned shoes. New research explains why.

Endurance athlete Jack Kuenzle climbed and skied the volcano in just over an hour and a half

Scientists studying mice found that their competitive efforts depended on their social ranking rather than their strength or speed

Five years ago, Thomas “Rivs” Puzey competed in the famed marathon’s elite field. This year, he was happy to be among the last to cross the finish line.

An analysis of power data from pro cyclists quantifies the effects of hot and cold air temperatures on performance

I am pretty sure no runner who has consistently won races approaches their training in this way

You can’t run fast without using your arms—or can you?

Despite years of research, the athletic potential of Montmorency cherries isn’t as sweet as it sounds

The ultrarunning multi-world-record holder talks about sustaining longevity and the biggest thrill of her illustrious career

Can two and a half minutes of instruction turn you into a better athlete? Givego thinks so.

Bill Hayes’s new book, ‘Sweat: A History of Exercise,’ offers a personal account of a universal tradition

Your unexplained fatigue may be due to calorie deficiency, with serious implications for your health and performance

An analysis of pro cycling data finds that altitude-born South American riders race better at high altitudes than their lowland-born rivals

The oral health risks associated with heavy sports-drink use seem clear, but the evidence remains murky

Eating right looks different for athletes, and following vague nutrition maxims can have a surprisingly negative impact

New findings suggest that results from large training studies can’t be generalized to individuals

Follow our 12-week, effort-based plans to achieve your half-marathon goals and have a great race experience

A new study of identical twins shows that, despite their reputation as inert rubber bands, Achilles tendons adapt to exercise

Most studies on sports performance don’t include women. The team behind Stanford’s FASTR program is creating a new approach—and building a healthier culture for female athletes. 

New research explores how physical and mental factors affect how athletes raise their game when it counts

A popular training rule for endurance athletes faces scrutiny from skeptical scientists

A new study grapples with a familiar question: How much of athletic success is physical, and how much is mental?

The company’s newest flagship timepiece promises astounding battery life as well as efficient solar charging, and it comes with a flashlight

We tend to assume that a nice-looking stride is a fast one, but maybe looking good is its own reward

A training plan and general principles to guide your first foray into longer ultramarathons

Starting at five hours a week, this ten-week program will help you build endurance and jump-start your training this winter

Four years ago, the Minnesota phenom won historic Olympic gold in cross-country skiing, alongside Kikkan Randall. She was just getting going.

Scientists have figured out how to make simple exoskeletons that improve running efficiency. Should track and field authorities be worried?

Different workout styles can get you equally fit, but they affect your body differently—which suggests that you should mix it up

Looking to sign up for your first triathlon? We share everything you need to know to help you have a successful first race.

“Though we’ve tested pricier, more feature-rich watches, we liked the budget-friendly simplicity of the new M2,” wrote our Buyer’s Guide tester. “It provides all the data you want (heart rate, activity tracking, interval timers) without any extraneous, confusing metrics that you don’t need.”…

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.

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

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

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

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

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

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

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

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

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

How two rival teams fought storms and sleep deprivation to claim an 18-year-old paddling FKT

A new study quantifies the effects of running on technical terrain

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