Running sprints can help you increase speed and lose weight, while long-distance running is best for race training and building endurance.

The Norwegian 4x4 method involves high-intensity exercise for four minutes followed by three minutes of active recovery, ...

But a little-known yet key part of longevity involves cultivating a healthy immune system. It makes sense: The stronger your ...

Getting faster by way of VO2 max work is all about efficiency. 'The higher your VO2 max, the faster or more efficiently ...

Editor’s note: Before beginning any new exercise program, consult your doctor. Stop immediately if you experience pain. (CNN) — Once you have embarked upon a new exercise regimen, most people hope to ...