I’ve turned into a gym rat, and I’m proud of it

Get workout tips, find new routes, or make the most of your rest days with these run apps

A mixed workout program produces the best heart health outcomes, a new study finds

Ready to achieve your next marathon goal? Not until you’ve done this workout.

Keep your fitness regimen in-house

Addicted to efficiency? Start by finding your lowest point in the day.

A miniature Spotify music player without the distractions of a screen or notifications keeps me happily training

The basic foundation to help build your yoga mastery.

No gym? No problem. Here are 7 workouts you can do on the fly.

You can do a lot more with a foam roller than you might think

Meet the minds shaping and building the big business of the outdoors

This week, we walk you through six daily exercises to boost mobility and balance.

Add these bread-and-butter interval workouts to your running repertoire to boost speed and endurance.

The government just released new fitness guidelines, which we boiled down to a single, simple mantra

Simplify your mobility routine with these three flexibility stretches.

A new study suggests that hitting the gym more than twice a week is counterproductive. That seems unlikely.

This stretching routine will help make you faster, stronger, and injury-free.

Michelle Parker loves long walks in the mountains. Here's how she trains for them.

Get the most out of gym days and training runs

Get the most out of gym days and training runs

Get your protein in while pleasing your sweet tooth

Get the results you’re looking for with one of these crowd-favorite powders

This machine isn't just the latest entry into the pantheon of strange exercise equipment. It's also the best thing to happen to mountain bike–specific training, perhaps ever.

The pros and cons of doing speed work on the track and on the road, and why you should mix in some of each

Four types of track interval workouts, their benefits, and how to optimally incorporate them into your training

Yes, you can work up a sweat while getting more done

See and be seen on evening runs, rides, and hikes

Some experts advocate quality over quantity. Others say the opposite. Who’s right?

These tights and skirts each have one ingenious pocket big enough to stash all your essentials

Rule #3 when it comes to training for exertion in high places? Adjust your expectations.

Build a better butt to carry you through any activity

Comfy, sweatproof designs for the gym and the trail

We asked a writer to spend one month going as hard as he wanted to—or didn't want to. Here's what he found.

The best way to prep your body to perform at its best

Get sweaty in our new favorite workout gear

How people who make a living playing outside protect themselves from sun, rain, and sweat

A new study explores why we're stronger and faster when someone is watching

We’re a competitive bunch. Here’s how we stay fit enough to keep up.

The vests, bags, belts, and more that top athletes use to stay primed while they push

Hopdash aims to help you meet up with local running teams while on the road

To get the most from your performance, you have to accept the unpleasant—and keep pushing

Your foam roller can do much more than just release tight muscles. Use it to strengthen and tone your whole body.

The feature-loaded, do-it-all smartwatches that give elites a competitive edge

We've been using the new smartwatch for a week. Here's what we think.

The tools that help her train for one of running's biggest marathons

A trail running champion explains how to train the strengths and skills you need to conquer mountain uphills and downhills

The tools and tricks the pros use to stay injury-free

For long-term health in endurance athletes, when you eat is nearly as important as how much you eat

Good fitness is about more than just powerful legs and core

New research finds that performance varies drastically based on the time of day

Build up your back muscles to gain power and prevent annoying aches

We shook up the ranking a little bit this year

How do we know them already? Because we asked some of the brightest minds in the business.

The tech giant’s latest foray into the fitness market: make exercise machines smarter

Eight packable products that make workouts on the road as easy as room service

Whether you're trying to qualify for Boston or just see improvement, these principles will get you there

Artificial intelligence is making its way into fitness apps

This list of 26 tips contains our most essential and timeless pearls for how to run your fastest 26.2 yet

Optimize your recovery by perfecting your post-exercise meal

We tested dozens of bras to come up with this list of 10 finalists for women size A to D+ who get after it outside

From grippy socks to callused palms, a quest for an exercise silver bullet

The most unsettling part is the loss of purpose

Consistently add this move to your training regimen to see major upgrades in power, agility, and toughness for outdoor sports

Fancy workout studios and alternative fitness methods are having a moment. We determined which ones will truly bring you closer to your goals as an outdoor athlete.

The new Watch is a more sophisticated fitness tracker than its predecessor, with an updated operating system, upgraded hardware, and cellular connectivity. But will it be enough to win over athletes?

Build your way up to the perfect box jump, then try these three progressions for continued results

Sure, it's fun and relaxing—but it can also be a key part of a fitness routine

If $75,000 represents the “perfect” salary, what’s the performance equivalent when it comes to cardio, diet, and time outside?

All the strategies, gear, and tips you need to cross the finish line

To start with, long steady rides are a boring waste of time, power meters are both absolutely vital and extraneous bullshit, and you can get faster without training like a lifeless automaton

It's more doable than you think. Just don't forget the chamois cream.

It's not just an upper-body exercise. Nail your form, then try these variations to improve your stability and strength from head to toe.

Nail the basic form, then ramp it up with these five creative variations for better, stronger results

To see major improvement in a matter of weeks, you'll need to learn how to sprint