Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

A new study suggests that HIIT workouts may help preserve lean mass in older adults compared to moderate exercise—but changes were small. Here's what to know.

Lungs burning, legs ceasing up – no one actually enjoys interval training. Pushing through the pain is the only way to unlock faster PBs and achieve a higher level of fitness ...

Every once in a while, I get a reminder that Twitter really can be useful. In this case, it was a tweet from Andy Jones pointing out an interesting detail in a new study that I might otherwise have ...

While its name is derived from research conducted in Japan, this style of workout—known as interval walking—is popular around ...

Plus, the 80/20 rule for optimal results ...