Behind the scenes at Big Air practice for the 2014 X Games. Follow and filming by Beau-James Wells.

Ski Jump champion Sarah Hendrickson finds a new way to improve her flying technique inside a wind tunnel as she prepares for the biggest season of her life.

Some researchers believe that significant increases in resting heart rate (RHR) are a sign that you’re over-stressed, though the physiological mechanism behind the increase is not well understood. While scientists are currently uncertain that RHR is an ideal gauge of training readiness, some believe it can be…

We can only assume you’re wondering whether the Denver Broncos or the Seattle Seahawks will have an advantage in New Jersey at Super Bowl XLVIII. Don’t make any bets until you read this! Just kidding. (No, really.) We posed your question to Rod Connolly, an exercise physiologist,…

Yes, it’s true that the volume of muscle mass activated during exercise is directly linked to the testosterone response. But it’s not the only factor involved. “Absolute workload (volume and intensity) of the session is also thought to be linked with the testosterone response,” Dr. Amy Vivien Tanner wrote…

When the urine collector came knocking, I didn't have a choice—start whizzing in front of him, or hang up my bike.

Douglass Lawder, owner of Buddha Fitness Club in Santa Fe, NM, walks through a quick workout that will keep you fit through the holidays.

In the wake of a controversial death, OCR hopes to better manage risk with the help of a new sanctioning body.

We posed your question to Dr. Kevin Laudner, a kinesiologist at Illinois State University who specializes in shoulders. “There are 20 to 30 muscles around the shoulder,” Laudner says. “I’m guessing there are quite a few that are causing the tightness, and there’s no one stretch that’s gonna get everything.”…

Time to chuck the ab-blaster and sell the ellipti-trainer. All you need for your ultimate home fitness center are these key essentials.

Slacklining isn’t just for show-offs anymore. It just might be the key to your winter-sports breakthrough.

The answer: it’s both physiological and mental. “It’s a natural defensive posture,” says family practice and sports medicine specialist, Dr. Bob Adams. “When we have bad news, pain, or something’s really stressful, we hunch up. It probably goes back to when we were in the uterus,” where we were safe…

The New Year's defining tech, fashion, and fads

Douglass Lawder, owner of Buddha Fitness Club in Santa Fe, NM, walks through a quick workout that will keep you fit through the holidays. …

Gyms are great for building strength and avoiding injury, but you don’t have to throw down $100 a month for that. Instead, do a series of body-weight-resistance exercises that target nearly every muscle, like the following four moves from certified strength and conditioning specialist Paul Hiniker.

When we published "Is CrossFit Killing Us?" fans of the workout went berserk, attempting to discredit the story, the research, and Outside. But the risk of injury is quite real—and it's the last thing CrossFit wants you to know.

Assuming both parts belong to the same person, we discussed your hypothetical ball problem with Dr. Peter Schlegel, a urologist and professor at Cornell University. “For the scrotum to freeze to the thigh, the thigh skin would have to be at a freezing temperature,” Schlegel says. That…

Can you really ski race on a torn ACL? What damage are you doing?

Do I have a higher chance of dropping dead from a heart attack if I exercise in the morning?

I’m racing the California International Marathon this weekend. The temperature will be in the 30s to start. How should I warm up?

Exercising consistently is the best thing you can do for your brain

When I get fat and out of shape, my first run back is always a super-itchy experience. My thighs itch, my abdomen itches, it drives me crazy. Why is that?

Your winter conditioning isn’t complete until you’ve built both power and endurance in the body parts that matter

Why you shouldn’t train with gadgets… and why you should

What rules do pros follow for exercising when they’re sick?

Traveling and time-crunched? Sneak in these 30-minute workouts to maintain your cardiovascular fitness, strength, and sanity this holiday season.

What’s a better shortcut for last-minute ski-season training, strength or cardio?

Is it a sign that I’m getting fitter, or that I’m out of shape if I’m sore three days after a workout?

High Five Foundation’s touching piece on Danny Toumarkine’s recovery and traumatic brain injury suffered snowboarding in 2011. #HelmetsAreCool…

Sally Francklyn is a ski patroller with 10 years experience, as well as a recognized expert on social media, public relations, and online editing for major ski industry clients. After taking an 850 foot fall on “Once is Enough” in the Jackson backcountry. Sally found her life had changed radically.

I have a few "target areas" I’ve been working on for about a month, including my abs, but I’ve seen no improvement. What’s going on?

There’s a number that controls your fitness destiny. And odds are you’re not doing enough to improve it.

As awareness about sports-­related traumatic brain injuries grows, so do the number of ­advocacy groups devoted to the topic. Here’s where to turn for more information.

The rewards of risk are fueling a catastrophic increase in TBIs. How can we protect ourselves?

What should I do about pain on the inside of the knee? I can walk and jog, but with constant pain. I just want to run!

The CrossFit backlash is in full swing—led by a long list of injured participants

I usually drink according to thirst to stay hydrated, but will that strategy work during the cold winter months?

 US Ski Team trainer Toni Beretzki demonstrates the Warrior One. More on the ultimate ski workout. …

 US Ski Team trainer Toni Beretzki demonstrates the Butt-Up. More on the ultimate ski workout. …

 US Ski Team trainer Toni Beretzki demonstrates the Side Kick Plank. More on the ultimate ski workout. …

US Ski Team trainer Toni Beretzki demonstrates the Swing Plank. More on the ultimate ski workout. …

Or better yet, use these tips and training techniques to not fall at all.

Expert advice from the Ironman World Championship’s top-placing American

Inside the mind and training habits of the fastest woman in Kona history

Sometimes, what's common knowledge doesn't need scientific validation. Listen to the advice of these two legendary athletes and remember that even the strongest of us need a little rest and relaxation.

Asthma sucks, asthma as an active person sucks even more. I can’t give up my activities; any natural solutions?

Is it true that exercising can lead to a second high after I smoke pot?

Every good athlete has at least one soft spot. Want to be great? Strengthen your weakest link.

Is there something special about the physiology of ultra-distance athletes and what can we learn from how they train?

What should I do to make the most of my lunch hour workout?

The Tough Mudder and Spartan Race champ is paving a new path through the sport

Researchers from the University of Texas say that exercise can be as beneficial in treating depression as medication.

The snow is already falling across the country. You don't want to hit the slopes this year unprepared.

Not to be vulgar, but I get gassy whenever I go somewhere above 7,000 feet. Please say it’s not just me.

Are there different rules for weight training vs. cardio when I’m pregnant?

I’d like to get in a workout at lunch, but I don’t have access to a shower during work hours. I don’t want to come back from lunch looking like Tom Hanks in Castaway. What should I do?

America’s young people are neither “slow" nor "complacent," argues one Millennial. They've just been kicking Boomer butt in events of their own choosing.

Sometimes when I run, I get this sticky white buildup around my mouth. Why is that, and how can I stop it?

Is there a way to know when I can push my workouts and when I should back off? I don’t have a coach for guidance.

We're told to exercise to stay fit and healthy, but sometimes training routines turn deadly.

Exercise isn't enough. To remain healthy, you need to build athleticism. Here's how.

I feel terrible after I exercise. I know it’s supposed to make me feel better, but I always feel worse. I’ve been working out regularly for almost a year, 30 minutes a day, 5 days a week, with no change. Can exercise make people depressed?

I have super tight hamstrings. How long do I have to hold a stretch to fix the tightness? Do people even static stretch anymore?

Not all celebrities are train wrecks. Sometimes, they're perfect examples of what we all should be doing to stay healthy and happy.

How to take care of your body as an aging athlete

I’ve thought about live GPS tracking my runs when I workout in new places. Is that a good idea, or is it dangerous?

I’m 5-foot-6. Is there any benefit to working on my vertical jump if I’m never going to dunk? How do I improve it?

Music helps get me through my workouts, and I’ve read that it helps people go stronger longer. But is there a certain type of music I should be listening to in order to get that boost?

My concern is how I can exercise longer into my older years. I'm 60 and very active (climbed to 18K twice last summer). It is just much more difficult for me to do the outdoor things that I love. Any tips?

Interval training is no longer the secret of the pros, but that doesn't mean you're doing it right

Forget about the wonder drugs. The elixir of youth and the "cure" to Alzheimer's and dementia may turn out to be exercise.

The surf legend's crucial exercises to achieve full-body strength for any athlete

Is your regular workout really working? We looked at some of the most popular in-the-gym moves, and found more effective ways to get you conditioned for real life.

How to show off your heart rate to the world

Is it true that impact stress in runners is greatest when the foot strikes the ground at the beginning of an exhalation? So if I always breathe out on my left side, I’ll increase my risk of injuring something on that side? I read this in a Runner's World article by Budd Coates and Claire Kowalchik.

Just hit the road to stay healthy? Not quite. If you're working a desk job, exercise may not be enough.

What if we're blaming the wrong people for doping? A new look into why athletes choose to dope raises serious questions about the fight against drugs in sport.

The first large-scale study has linked endurance training to irreversible heart damage. Should the report be giving you panic attacks?

I spend a lot of time traveling and competing in various sports. Should I be worried about developing a blood clot when flying home from a race?

CrossFit champ Samantha Briggs believes in resting as hard as you train and ditching the set exercise schedule. She shares her favorite training tips.