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Sound impossible? Runner Jordan Tropf has put in the work—here’s how he pulled it off.
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?
Yes, people sometimes die while running. No, that doesn’t mean running is “dangerous.”
Build strength and alignment to help eliminate overpronation and protect your feet and ankles
When you confront your mortality on a regular basis, the shift in perspective can be profound
Oregon voters have opened the door to treating mental illness with substances like ketamine and psilocybin. In a peek at the future, our seeker attends a backwoods retreat where patients get help from a powerful combination of drugs and the outdoors.
A new study investigates how different types of physical performance are affected by the time of day
The case of 24-year-old Daniel Granberg, who died of high-altitude pulmonary edema earlier this month, highlights the danger of altitudes well below the Himalayan “death zone”
A new study suggests that hydrogels enable you to down more carbs with less digestive distress, and race faster as a result.
After a particularly rough spring, an Outside editor invested in a Coway Mighty air purifier to help with her asthma. She’s breathing better already—and the rest of her family is, too.
A new app called NatureQuant harnesses the latest research to track and rate your time outside. Next up: determining how much you need.
What sets Athletic’s award-winning craft brews apart? They prove that you don’t need to compromise on taste or your health to enjoy great beer.
These tips will help you build up to your running goals and stick to your plan.
Expert strategies and intuitive tech to help you set and achieve your goals
A new study measures the physical and cognitive load of four different treading techniques. The key? Generate lift.
Eating disorders affect people of all backgrounds, at all weights. To tackle them, we first need to reframe the way we think and talk about them.
In this excerpt from his new book ‘The Practice of Groundedness,’ our Do It Better columnist Brad Stulberg explains how ritualizing exercise benefits your brain and body
After taking a cue from ‘My Morning Routine,’ an Outside contributor discovered an extra hour in her day
Get these six items to improve your sleep and wake up ready for anything
Supersapiens’s new continuous glucose monitor promises to help athletes manage their energy levels. But can it really stave off a bonk?
It’s not exactly fun in the moment, but after, you’ll say it was the best time you ever had
A long-running gym debate about whether to train each limb separately comes to the cycling world
The popular app promises weight loss without dieting. Then it proposes restrictive eating habits.
Lyme-carrying ticks are a bigger threat than ever. A promising new antibody treatment looks to stop infection—even after a tick bite.
A new study of Western States ultrarunners illustrates the power of looking beyond simple risk factors to predict injury
Scientists have been debating whether muscles contract more slowly as you age, but new data suggests the real problem is a loss of strength
A physical therapist explains why your wrists hurt, and how to rehabilitate and protect them
After years of debate on the dangers of “too much exercise,” researchers sum up the state of current knowledge
Electric muscle stimulation claims to be a more efficient form of exercise. Here’s how it holds up.
You might not be a wildland firefighter, but that doesn’t mean you can’t train like one
Most core workouts target your abs. But to build a properly strong core, you need to strengthen the other essential muscles supporting your core. Here’s how.
We asked a handful of athletes competing in Tokyo in various sports to share how they fuel themselves
Exercise and digestion often don’t mix well, but scientists are on the case
When you're running in high temperatures, here's what you should know about adjusting your pace—and still getting the same workout intensity. We dig into the science of swelter.
Israel Start-Up Nation’s physiologist Paulo Saldhana explains the data—and the feelings—that determine who attacks when in a cycling race
After years of shredding on a screen, our web producer went outside to try the real thing. Plus: a one-month ollie training plan.
What this Olympic moment can teach all of us about mental health
In her new book, ‘The Joy of Sweat,’ Sarah Everts answers all of our writer’s questions about perspiration
Answers to the questions you’ve always had about perspiring but were afraid to ask
The nutrition trend is all over TikTok, and it’s actually not a bad idea
After discovering Skinnies Sungel, our writer no longer dreads lathering up for a day outside
Whether you’re looking to transition from pavement to dirt or just log more and faster miles off-road, Saucony athlete Katie Asmuth has you covered with hard-earned tips and advice
They’re deceptively straightforward, but if you can follow them, you’ll see the benefits
It’s the simplest and cheapest performance booster available, so why don’t elite athletes take advantage of it?
Push too hard when it’s hot outside, and your dog could develop exercise-induced heat-related illness
A step-by-step guide to help you build up to the ultimate lower-body move
Five years after the Vaporfly upended marathon running, track shoes are set to star in Tokyo
What we learn from getting way, way outside our comfort zones
From cereal and waffles to cottage cheese, we found retooled takes on the morning classics
It turns out we have a lot in common
New research fine-tunes the details of heat adaptation
Pandemic-induced isolation has led to a wide range of physical effects. Here’s what to watch out for—and how to address it.
The buzziest supplement on the market might just live up to the hype. Here are our favorite new products.
Work your balance and core strength with these functional exercises
The secret to pushing past your mental limits could be a handful of coins
A new study shows measurable gains in strength from a purely imaginary training program
Quick fixes and one-size-fits-all solutions abound in the world of wellness influencers. Here’s why you should avoid them.
Happiness is a state of mind. Here’s everything you need to know to achieve it.
Elevate your strength routine with this effective, versatile tool
We may be closer to answering lingering questions around concussions. Plus, we provide a rundown of the most common head injuries—and what you need to know about them.
The physiology of events like the Ultra-Trail du Mont-Blanc is radically different from “short” events like the marathon
Working stabilizer muscles can lead to big gains in and out of the gym
Between sun, water, sand, and wind, river trips are hard on the skin. Here are six packable essentials to protect you from the elements.
Instead of focusing on joint angles and limb movements, a new study takes a holistic approach to the biomechanics of elite runners
Dealing with discomfort isn’t a magical gift. It’s a skill, and you can improve at it.
Sustaining and delicious whole-food meals and snacks to pack for your next mission
Essential questions to ask during your doctor's visit, at every age
Think you wouldn’t benefit from some mental maintenance? Think again.
Looking to level up? Get started with this inexpensive, four-move routine.
A body in motion will inevitably need a little maintenance
A spiral of injuries—and the attendant existential crisis—can be an opportunity to revisit the fundamentals
New research sifts through the evidence to figure what types of intervals make you fastest
All types of athletes can benefit from quicker instincts
A DIY almond—or cashew, or sunflower—spread should be a staple in any kitchen
The former Harvard rower is making the most of a six-month sabbatical from his new job at Zwift
In a new event for Outside+ members, meet and train with the stars of Team USA
Exercise causes pain, but it also dulls it. Researchers are still trying to understand how that works.
Whether training or racing, you’re going to hit some challenges. Here’s how to motor on.