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My heart feels like it skips a beat every once in a while, especially during exercise. Is this something I should get checked out?

I'm training for an upcoming marathon, and my company's giving out influenza vaccines the week of my race. Will the shot impact my performance?

I'm planning to spend a lot of time at the gym this winter. How do I know that mine gets a clean bill of health?

My house is filled with sweets this time of year. Can I use them instead of sport gels and gummies for long runs and bike rides?

I've always heard that exercise is good for the brain, but does it actually have a real-world impact?

I hear the whole stunt-man thing is a great workout. Is it worth incorporating into my routine?

Or is the test they give me at the shoe store good enough?

Long flights and car trips wreak havoc on my body. How can I reduce the stress of travel and keep up with my current exercise routine?

I want to see if my smartphone can make my workout better, but there are so many choices. What are some tried and true apps that I won't just delete a week in?

I like to exercise in the afternoon or evening, but I often feel too tired to motivate myself. Could a quick rest help?

I hate exercising early in the morning, and I always have obligations at night. How can I squeeze in an effective midday workout?

Sometimes you have to get out of your head to get into your run.

Should I be concerned about Vibrio vulnificus cases reported in Florida and Maryland?

Sometimes when I'm in the middle of a really hard workout, it tastes like I'm sucking on metal. What's up with that?

Hill sprints will change the way you run

I thought that starchy foods aren't good for you—why do I keep reading about the health benefits of this certain type?

The last time I ran a marathon, I got sick a month before the race. Is there a connection—and if so, how can I prevent that from happening again?

After an Ironman or an ultramarathon, is it better to take days (or weeks) off of strenuous exercise, or to get right back out there?

Ultrarunner Adam Campbell says he was zapped during the Hardrock 100 trail race this month, but still managed to finish in third place. How is that possible?

When my wife and I go on long runs together, she always manages to finish strong while I fall behind. Am I just out of shape, or do women have an advantage in endurance sports?

I usually sleep for a full eight hours, but lately my new baby has been waking us up every few hours. Does interrupted sleep still count as sleep?

Two brothers and a sister—whose parents are endurance athletes—attempted to swim the English Channel together this month. Does the family factor add any advantage?

Cycling is known for being low-impact. But does that mean it's bad for your bones?

How should I schedule giving blood around my training schedule?

It may not be coincidence that led host country Brazil to the World Cup’s semi-final round for the first time in 12 years. But if Brazil really did have a home-field advantage, what do we make of the team’s tournament-ending, humiliating loss to Germany Tuesday? While a large…

Bet you didn’t think this would come up in your fitness regimen, but your esophagus needs love during training, too. Intense exercise can contribute to heartburn and gastroesophageal reflux disorder (GERD), and there’s a good chance that ramping up your routine may be causing your symptoms, says…

If you never have to worry about actually performing at the top of your game in the heat, then by all means head inside to the treadmill, says Chris Jordan, creator of the 7-Minute Workout and director of exercise physiology at Johnson & Johnson’s Human Performance Institute.

How do we put this nicely? If you’re anything like the participants in a recent Canadian study, you’re probably wrong about your workout intensity. (And yes, you probably are like them, considering that the group contained both men and women of different ages, ethnicities, and BMI classes.)…

We know— it’s hard to pass up the breadbasket, especially if you know you’re going to burn off all those empty calories. And while athletes need carbs—and have a bit more leeway in the unhealthy foods department—it’s prudent not to make white bread a regular staple in…

Think of those tough spots as badges of honor! “Callus formation is a natural response to friction and pressure,” says podiatrist Megan Leahy of the Illinois Bone and Joint Institute. “Because runners obviously take more steps than non-runners, calluses may occur more readily.” Calluses can be harmless,…

A few weeks before my first “half distance” triathlon—which consisted of 70.3 total miles, including a half marathon at the end—I slipped into a brand new pair of sneakers, intent on breaking them in during my next few practice sessions.  They’re triathlon-specific shoes, outfitted with elastic bungee laces and a…

If you’re the type of person who regularly burns the midnight oil, the thought of waking up for a 6 a.m. workout may be pretty unappealing to you. And you’re not alone: A study presented at the Associated Professional Sleep Societies’ annual meeting last week reported that…

This may not be the answer you’re looking for, but it’s the truth: The most effective way to get back into shape (and stay that way) isn’t by just doing one magic move over and over. The good news? You may not have to work out more than or…

Depending on the school of thought you’re following, meditation can be practiced in a number of ways—sitting cross-legged in a dark room, while on a long run, or even on a crowded bus with the help of a smartphone app and a pair of headphones. In general, though,…

Vitamin B12 shots have been around for years, and they’re often marketed as a miracle cure for everything from fatigue to depression to those stubborn extra pounds you can’t shake. And while it’s true that a B12 deficiency can contribute to those things, there is…

If your everyday routine includes hour-plus sweat sessions, you can probably rest easy, says Brook Schantz, a registered dietitian and Certified Specialist in Sports Dietetics at Loyola University Medical Center; there’s a good chance your body needs more than the Recommended Daily Allowance of 2,300 milligrams of…

They say that showing up (or, in this case, putting it in writing) is half the battle—so for that, congrats on a big first step. Now, for your question: Science says that at 40 you are definitely not too old to benefit from a regular exercise routine. Great news, right?…

Tour companies are offering new and unique ways to explore formerly forbidden countries. So what's the catch?

As unappetizing as they might be, those slimy packets of quasi-liquid goo exist for a reason: They’re a quick, portable, and relatively efficient way for runners to take in and digest calories and much-needed electrolytes that are lost during exercise. Different brands come in many different flavors and viscosities—some sweeter…

A favorite beverage of many athletes, trainers, and nutritionists, juice made from tart or “sour” cherries (the kind you use to make cherry pie) has been shown to reduce inflammation and ease muscles soreness after strenuous workouts. But that’s not the only reason you might want to…

When it comes to performance anxiety, fitness competitions can be a lot like taking the SATs or giving an important speech. And yes, over-thinking or stressing about them beforehand can, indeed, cause you to “choke,” according to a study presented last week at the British Psychological Society’s…

That depends how many fish sandwiches you’re eating, says sports nutritionist Lisa Dorfman, RD, CSSD. But aside from mercury levels and other contaminants, there are plenty of other reasons to choose something other than fast-food seafood when you’re out and about. First, the good news: Fast-food sandwiches…

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