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I’m usually not hungry right after I work out. Does exercise suppress appetite? If so, how does that affect weight loss?

Everything you need to improve your time on the course

I have trouble figuring out how I should be training during the holidays, when the weather’s dreary, the food’s plentiful, and I don’t have any races planned. But I don’t want to pull a Jan Ullrich. What should I do?

Chrissie Wellington. Photo: Triitalian/Flickr Triathlete Chrissie Wellington announced on her blog yesterday that she is retiring from Ironman triathlons. Wellington won the Ironman World Championship in 2007, 2008, 2009, and 2011. The 35-year-old…

I hike every Wednesday morning at 6:30 a.m. with two friends. They're very fast and charge right up the hill, whereas I'm much slower at that time of the morning. But in the afternoon, I'm much faster. Is there any physiological or scientific reason why one person is faster in the morning and another is faster in the afternoon? And is there any truth to "morning" people and "nighttime" people in terms of athletic performance?

Just about every time I work out, my face turns beet red. Sometimes it lasts long after I’ve stopped exercising, which makes running during my lunch break difficult. Why does this happen? And is there anything I can do about it?

Len Stanmore, 60, is currently in Antarctica, competing in one of the world's most grueling footraces. If he completes it, he'll not only be a one-time overweight retiree who got sick of the golf course, but also the first person to climb the Seven Summits, ski to both poles, and complete the 4 Deserts Grand Slam.

How does implanted saline and silicone behave under extreme conditions, whether at jet-cruising altitude or during a deep-sea dive?

I always get the post-workout chills, even when it’s warm outside. What causes them, and is there anything I can do to avoid it in future?

I heard alternating hot and cold water is just as effective as an ice bath at speeding up recovery, but way less painful. Is this true? How do I do it?

An Olympic sport at the turn of the 20th century tries to find its way back into the modern Games

Is it true that sleeping well two nights before an event is more important than sleeping well the night before?

I’ve been reading about how sitting at work all day can cause heart attacks and early death. But if I’m training 15 hours a week, should I still get a standing desk, or do I need to sit to recover faster?

Taking Fido along for a hike in the woods can be rewarding and fun, but you need to be prepared in the event of an unexpected emergency

I read that the human sleep cycles last 90 minutes, so people are more rested if they sleep in increments of 90 minutes—7.5 hours, for example, is better than eight. Is that true? And what about sleeping for 4.5 hours at night, then supplementing with a few 90-minute naps? Is that the same as sleeping for 7.5 hours?

When I was in college, the head of athletics held an all-team meeting at which he said that every alcoholic drink we had would set us back a week of training. True or false?

Tens of thousands of people are hurt while riding their bikes every year in the United States alone. Follow these 10 basic guidelines to make sure you avoid injury and stay safe.

We asked three hard-charging �����ԹϺ��� readers how they manage to stay supremely fit while balancing work and family. The secrets to their success are easier than you think.

Our best writing on America's obstacle racing craze and the personalities behind it

Lance Armstrong allegedly doped and won seven Tour titles. So if I dope, I should at least dominate some local races, right?

In Argentina, rival soccer fans don’t just hate, they kill, and the violent partisans of top clubs fuel crime syndicates that influence the sport at its highest levels. Patrick Symmes braves the bottle rockets, howling mobs, urine bombs, and drunken grannies on a wild ride through the scariest fútbol underworld on earth.

The obstacle course craze is taking over America. This year some 1.5 million people will enter an event. But behind all the dirty fun is a nasty business and legal battle between entrepreneurs looking to cash in. Here, in a preview of �����ԹϺ���’s November cover story, is a glimpse at just how far they’ll go to sell you their brand of pain.

I always get sausage fingers and puffy hands whenever I go on day hikes. My friend says it’s because I’m not eating enough salt. But doesn’t salt cause bloating? What’s going on here?

I’m running the Twin Cities Marathon in October. I’ve been getting a massage about once a month while I’ve been training, but I'm not sure when to schedule my final massage before the race for optimal performance. Got any tips?

Sometimes winning just means not losing any blood

I was about halfway through a 17-mile run in preparation for a marathon. I was wearing a hydration belt that contained a cell phone, mace, endurance beans and two 10-ounce water bottles. During the run, a man on a bike pulled up to me and told me that I was going to "ruin my back" carrying that much weight. While I haven't done 100 marathons, this isn't my first time. I have been working hard to keep my core strong, and I try to position the weight so I carry it on my hips. Is he right?

I’ve seen conflicting reports on whether it’s better to exercise in the morning before or after breakfast to promote weight loss. Which is it?

A rundown of the biggest moments of the 2012 Paralympics in London, from conflicts to triumphs. https://youtube.com/watch?v=6SLxh0ceP70 10. Armless Archer Wins a Silver MedalWhen Matthew Stutzman, 29, first became interested in archery, he Googled, “How to teach a guy without arms how to shoot a bow.” Nothing came up.

File this one under fun: Cal Coast Track Team Daily Jump. Photo: The Daily Jump We recently caught wind of a new DIY fitness trend that’s going viral. You can do it anywhere, anytime, with anyone. By yourself. On a trail. with your kids in…

There can be only one super-specific, outdoor sport

I watched Jen Kessy smack gum throughout her Olympic beach volleyball matches. Can gum help performance, or does Kessy just have really bad breath?

Fitness magnate Bahram Akradi is buying up some of the most beloved endurance events in the country—and he has plans to improve them. So what's everybody afraid of?

All of my non-cotton workout clothes reek after I workout. What the heck? Are there any technical workout clothes that won’t hang onto my B.O. for eternity?

When’s the best time to use a foam roller, before or after a workout?

Can I convert my fast twitch muscles to slow twitch muscles and vice versa?

David Hill thought he was joining a bookstore-sponsored basketball league in Brooklyn, but it turned out to be a lot more than just thick-framed glasses and set shots

The U.S. men's soccer team made history against Mexico last night. But what makes one win so impressive?

I got heatstroke in a running race two years ago and passed out. Am I more likely to get it again than someone who’s never had it?

My lower back can can get stiff and sore between workouts. Will sitting on an exercise ball while at work help me to strengthen it?

Photo: Gary Bembridge/Wikimedia Commons Like the rest of the world, I’ve been obsessed with the Olympics these past two weeks. I’m a sucker for stories of human will and triumph, and the London Summer Games, like all Games, don’t disappoint. Sure, the time-delay sucks and you…

In triathlon, where training volume can make it impossible to hold down another job, Olympic hopefuls often live with parents or sleep on friends’ couches, struggling to make ends meet

It's no secret that a lot of athletes are superstitious. Hockey player Bruce Gardiner used to dip his stick in the toilet during scoring droughts to punish it so it would perform better. NBA point guard Jason Terry sleeps…

This is not true at all, but I'm still going to share it Photo: BBC The BBC has put together a quick little tool that tells you which Olympic athlete you most resemble. Well, kind of. They've built an app that determines your Olympic body match based…

I have a friend who takes a puff of asthma medicine before he competes even though he doesn’t have asthma. He says it increases his oxygen uptake so he can go stronger longer. Is that true?

Testing out the kid-friendly SlackRack. Photo: Gibbon Slacklines With their low center of gravity and natural ability to live fearlessly in the present, most kids are quick studies on the slackline. Just look at 14-year-old Alex Mason, who won the inaugural slackline competition…

(p_a_h/Flickr)Photo: p_a_h/Flickr The five things you should know if you were only going to know five things about yesterday at the Olympics. 1. Gabby Douglas. She extended the American women’s all-around gold medal streak to three. She’s the first American woman to win gold in both…

The story of 17-year-old boxer Claressa Shields has appeared so far in the New Yorker, The New York Times, NPR, and numerous other high-profile media outlets. Shields, also known…

I’ve heard surfers say you shouldn’t go in the water after a storm. Is that true? And how long do I have to wait?

The Russians won't win every medal, but they should

The badminton of gymnastics

There is a man named "Teddy Bear," and he could kill you

The name pretty much says it all

It's hockey on a field—except, different

The U.S. isn't competing, and the Soviet Union has the most all-time medals, so why watch?

By Elizabeth Eilers Sullivan As I wrote about in my last post, yoga can help kids develop flexibility, strength, agility, balance, and body awareness. When teaching little yogis, it’s important not to worry too much about proper poses or “doing it right.” It’s more about exposing them to…

I saw a Groupon for a trip to a local infrared sauna. How’s that different from the dry sauna at my gym, and will it help my achy knees?

Men, women, spouses, ex-lovers, and a 71-year-old: all competing against each other

China, China, and China

There's more here than meets the, um, bullseye

Tough Mudder says their Electroshock Therapy obstacle delivers a 10,000-volt electric shock. Can a human survive that, or is it a sham?

The method behind the most intensive drug-testing program in history

I keep my favorite necklace and wedding ring on when I exercise. Can chlorine and sweat hurt them?

When former �����ԹϺ��� Online Editor Megan Miller told me this past spring she was working on a new adventure fitness app called Teemo, I was curious. How would it work? Who would use it? How easy would it be? She revealed the app a couple of…

I’m racing the Leadville Trail 100 this August. I live at sea level, so when should I go up there to race my best?

Fact: Exercising in polluted air can increase your risk of asthma, stroke, and heart failure. But is it better than the alternative—avoiding a workout altogether?

I want to keep up my training routine—but I'm injured. Will taking Advil for the pain in my strained quad inhibit healing?

I know that exercise is supposed to improve sex, but is there a point of diminishing returns?

I want to add miles for my ultra training, but I'm concerned about breaking down my body. Will longer runs wreck my hard-won muscle tone?

The United States Olympic Committee has announced its 2011 coaches of the year. Rick Bower, coach of the U.S. snowboarding halfpipe team, took home the top honor. In the past, that award has gone to prominent names, including cycling coach Chris Carmichael…

I’ve seen it on a whole range of athletes, from Olympic volleyball players to swimmers and soccer players. How is Kinesio tape supposed to work, and is it effective?

A strong trunk is the key to efficient paddling. These four poses will help get you there.

There's been a lot of talk lately about long runs being hard on the body, particularly the heart. I've also read the CrossFit argument against distance running, even when preparing for a marathon. Should I change how I run?

Everything you need to complete one of the hardest races on earth, including a 16-week training program developed by Spartan's own Dr. Jeff Godin; the ultimate Spartan nutrition plan; and advice from Hobie Call, the winningest Spartan racer of all time

Is it true that if I abstain from caffeine before I race, it’ll be more effective during the race? How will it help me, and how much should I take?

Staying loose and strong are essential for efficient swimming. These four poses strike the perfect balance.

Lewis dishes on the nuances of slackline tricking competition, the newest event at the Teva Mountain Games in Vail

I’m bored of my routine and have trouble getting motivated to exercise. I'd like to train with someone, but I'm not sure where to look. Got any suggestions?

Sitting down with an �����ԹϺ��� in Aspen athlete

A Q&A with an �����ԹϺ��� in Aspen participant

Juggling a busy schedule, I try to make my exercise time as well-rounded and efficient as possible. To maximize my workout, is it better to run or lift first?