Figuring out how many calories running burns involves a fairly straightforward calculation, but the overall equation is not as simple as it seems.

Side stitches are hard to diagnose and study, but runners have found ways to relieve and prevent them.

Rowing works a lot more than just your arms—it also targets the glutes, hamstrings, quads, core, back, and shoulders, making it an excellent full-body cross-training option for runners.

These tricks for running will get you out the door faster, keep you comfortable, and make training more convenient and consistent

Medical experts explain what causes back pain during a run and how to treat it

Ankles are foundational for running and ankle injuries aren't as minor as we have been taught to believe

How far will your running strengths carry you on the court or playing field, and which sports will best make you ready to run well?

Training elevates important hormones, but too much stress can throw off an athlete’s hormone balance

Sciatica, an intense pain down the leg or lower back, is a symptom; here's how to find and treat the cause

Dealing with painful shin splints involves rest and strengthening your hips and calves

Not long, but you can maintain your fitness level with minimal workouts.

A sharp pain in the heel and arch of the foot, plantar fasciitis has numerous causes and treatments

Injury to the Achilles tendon can be long-lasting—here's how to diagnose, treat and prevent it

Is there a baseline temperature? What about frostbite? We break down the best practices for running in winter.

Rest, relaxation and time off are important ingredients to success

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