How You Know You Are a Runner

How do you know that you're a runner? When certain habits become second nature, you've become one of us. Check out this fun look at runners' quirks.

By Sabrina Grotewold

The New Rules of Marathon Nutrition: How Many Carbs?

Studies have shown that low-carb diets do indeed increase fat burning during running. But, how does this affect performance?

By Matt Fitzgerald

What to Do About Running Aches and Pain

How do you know the difference between normal aches and true pain, which can be the sign of something more serious? Here's how to tell.

By Karen Janos

The New Rules of Marathon Nutrition

Want to get leaner for your next marathon? Active Expert Matt Fitzgerald studied the diets of elite runners for years, and shares their secrets.

By Matt Fitzgerald

The Importance of Running Well

Too many people rush into high mileage training programs and wind up injured. Learn to run well before you run more. Here's how.

By Justin Levine

Is Your GPS Watch Accurate?

If your GPS watch says that marathon you ran was actually 26.5 miles, what should you do? Before you question the race itself, first find out how a...

By Ryan Wood

Why Runners Need Spinning

Want to increase your fitness, but don't necessarily want to run more? Spinning is a great choice for runners; here's why.

By Laura Forman

Why Too Much Running Is Bad for Your Health

When it comes to running and other forms of vigorous exercise, more isn't always better. Rack up too many miles each week and you may actually harm...

By Elizabeth Narins, Women's Health