You won’t freeze your lungs exercising outdoors this winter, but there are reasons to be cautious about inhaling extremely cold air

Want to ride like Pete Stetina? Learn how he and other top athletes use Wahoo’s latest tools and technology to achieve their goals—and how you can too.

Fancy new midsole materials like PEBA make you faster, but at the cost of durability

While a light jog or quick weights session might help clear out lingering congestion, there are times when exercise might actually do your body (and others) more harm than good

When to take cues from your body and rest, and when to treat soreness with medication

Joint health is a cornerstone of staying active as you age. Not sure how to work on it? Start with these seven expert tips.

To ward off cognitive decline, a new analysis suggests that strength matters more than how much muscle you have

People all over the place are creating outrageous unofficial athletic contests that are equal parts grueling and just plain silly. What’s going on?

The new science of skill acquisition can help coaches and athletes get more out of their workouts

News flash: All that data you’re mining may not be good for your health

Scientists want to know why we don’t keep getting bigger and stronger forever

A new federal law, the Rodchenkov Act, has the potential to dramatically clean up international sports. A case involving a Texas doping ring illustrates how the new legislation works.

After two new marathon world records, it’s time to reevaluate why marathoners are getting faster and what comes next

Toss out the marathon prediction equations. Understanding what determines ultra performance takes a whole different approach.

Watch how coach Lara Rogers helps women excel in professional running and pursue their wildest goals

All the digital training data in the world may not tell you whether your workout was any good

Replenish your energy and stay strong

A rigorous new study finds small changes in heart rate and subjective feelings of recovery. Do they matter?

A new study of athletic career trajectories finds that early success is less meaningful than you’d think

We often focus so much of our stretching on our legs, but athletes need to focus just as much time and energy on their upper body

Researchers assess the potential benefits—and downsides—of the hundreds of bioactive compounds in your morning brew

Here’s what the experts say

A trainer breaks down her go-to moves to maintain healthy hip abduction

When it comes to your recovery, you’re likely neglecting this section of your spine. Here’s how to offer it some relief.

Tramadol has a long history of suspected abuse among cyclists, and now there’s enough data to put it on WADA’s banned list

It’s time to integrate these trainer-approved exercises into your recovery regimen

When illness or injury forces you to take a complete break, researchers have some ideas on how to limit the fall-out

Sports scientists weigh in on the trends that will keep the PRs coming

With these moves, you'll hit the slopes feeling strong and powerful

Analyzing glucose data from endurance athletes offers new(ish) insights, with the potential of more to come

With no weights required, you can do this workout anywhere

They don’t necessarily save energy, but a new study suggests they might save your legs

To optimize your health or supercharge your training, you sometimes need to look beyond the lab

After seeing more and more people join in on this outdoor fitness craze, I decided to try it for 30 days

You may want to reframe how you think about that discomfort

There are both healthy and harmful ways to get away from it all, psychologists point out

A high-tech approach called metabolomics offers a new perspective on how your body bounces back from 26.2 miles

Same stretch. Less discomfort.

Fine-tune your muscle imbalances with this workout finisher series from physical therapist assistant and personal trainer Lee Welton

Records are falling and times are dropping. Is it the shoes, or something else?

She knew she was going to be the best triathlete in the world one day. But first she had to learn to swim.

Give your legs some much-need relief with this expert-approved routine

It’s time to perfect your squat form. By avoiding these errors, you’ll finally be able to do just that.

The latest research suggests that muscle oxygen can detect exercise thresholds, with no blood required

Researchers present new findings on mental fatigue, mental training, and the importance of your surroundings

A certified personal trainer shares the best moves to help you build functional leg strength

Scientists consider the latest spikes, individual variability, and the pros and cons of training in racing shoes

Foam isn't supposed to be painful. Here's how to roll out your muscles the right way without hurting yourself.

Physicians and researchers weigh in on the benefits and disadvantages of having hypermobile joints

It’s a bit simpler than you might think

A certified personal trainer breaks down what you actually need to know about lifting and running

Scientists reconsider the assumption that it only helps strength and power athletes

Because of all the gear you buy for your rides, your helmet may be the most important

Don’t let knee pain hold you back from all of your outdoor (and indoor) activities. These movements will keep your largest joints functional and healthy.

Plyometrics can make you a more efficient runner, and it turns out they don’t need to be complicated or risky

A personal trainer shares seven exercises that focus on your biceps, triceps, and shoulders

In an excerpt from her forthcoming book, ‘Up to Speed: The Groundbreaking Science of Women Athletes,’ longtime Outside contributor Christine Yu argues that female athletes deserve their own benchmarks for athletic success.

Researchers look back on the lessons from 25 years of “live high, train low”

This workout will help you incorporate this critical movement pattern into your strength-training regimen

Smog season is here. Recent research offers some clues on how to help your body adapt to the stress.

More money means a greater risk for corruption, but professional running needs something to shake up the status quo

A certified personal trainer shares how to avoid the most common mistakes

This unlikely combination may just improve your flexibility and performance

New data finds that endurance- or speed-oriented muscle fibers don’t determine how you respond to strength training

Collin Chartier recorded a positive test in February

Plus, how you can test the range of motion of this often-forgotten joint

In-race data collected during the world championships sheds new light on how top endurance athletes avoid overheating

These exercises will improve your posture, balance, and stability

After the worst of your injury is behind you, these movements will help you return to your active life with confidence

Action plans and inspiration for you to get in better shape

There’s plenty of hype about ways of boosting your respiratory system. Some—but not all—of it is real, according to a new review.

You need flexibility and stability to train effectively. That starts in your toes.

A new review weighs the evidence that strength and training adaptations vary across the phases of the menstrual cycle

Why your decades-old recovery regimen may no longer make the cut

Researchers use isotope tracers to accurately calculate calorie burn and other parameters during a grueling full-day ride

Athletes of all levels have considered whether their choice of birth control might influence how they train, recover, and perform. But the answer is complicated. Here’s what you need to know.

What’s the difference between overcoming hardship and succumbing to it? Grit.

It's simple—but so challenging

So-called “augmented feedback” can offer both information and motivation. A new study tries to separate the effects.

Add these moves to your routine to avoid injury