Runners make bigger improvements following a flexible workout schedule rather than sticking with a predetermined one
Women are said to be 10 to 12 percent slower than men across distances, but a new analysis finds narrower gaps for sprinters
There’s encouraging new evidence on artery stiffening and the risks of too much exercise
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 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.
The loss of a big toenail sent Outside columnist Brendan Leonard into an existential crisis—but maybe not for the reason you think
Ice cream? Before a run? Yes, please.
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
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
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.
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
An analysis of pro cycling data finds that altitude-born South American riders race better at high altitudes than their lowland-born rivals
Eating right looks different for athletes, and following vague nutrition maxims can have a surprisingly negative impact
Reflections on getting just a little bit older
New findings suggest that results from large training studies can’t be generalized to individuals
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 new study grapples with a familiar question: How much of athletic success is physical, and how much is mental?
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.
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.”…
Our Sweat Science columnist spent two months measuring his blood sugar around the clock. Here’s what he found.
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
Mike McCastle has found a very unusual way to benefit others: by enduring agonizing physical challenges
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