Here are seven things your body is doing while you run.
When an endurance athlete was diagnosed with a rare genetic heart condition, it forced her to change her entire lifestyle — and offered her the opportunity to really listen to her body.
One runner takes on the world’s wackiest races — and lives to write about it.
How do you transform an ordinary cardio workout into a more robust physical challenge?
Gearing up for a big tri event? This quick, effective, six-week strength-training program will improve your overall fitness, help you avoid injury and have you crossing the finish in record time.
We get the pros to answer your questions on upping your running pace, pushups, hotel workouts and more.
Researchers find that a new interval-training program improves performance and health in half the time.
A trio of efficient sprint workouts to help you build serious fitness, fast.
In search of the ultimate do-anywhere workout? This strength-and-cardio routine is ready whenever you are.
Increase your aerobic capacity and strength in just four short laps around a standard running track.
Your guide to training for a sprint triathlon.
What you need to know about how to prepare for your first sprint triathlon from the sport’s most respected expert.
Competitive running doesn’t require superhuman athletic ability — just a willingness to train and a realistic plan. Here’s how to make it to the finish line for the first time.
Whether piling up the training miles or racing against the world's top middle-distance runners, Olympian Carrie Tollefson just loves to run.
If the thought of pounding the pavement makes you want to head for the hills, trail running may offer profound appeal. Find out why millions of runners are taking to the trails.
Let go of your preconceived notions. Find your stride, seek your rhythm and discover the runner inside you.