If you have a half marathon or marathon on the horizon, or even a 10K, it might seem counterintuitive to go out and train your body to run 100 meters as fast as you can. But even if you’re gearing up ...

High-intensity interval training, or HIIT, is a great way to get in a fast, effective workout. This quick routine is helpful ...

Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

Experts explain the difference between stamina and endurance and share the best stamina-boosting workouts to add to your schedule ...

For those who live to sweat — but maybe want a chance to fully catch their breath — SIT is the new HIIT. HIIT, or high-intensity interval training, includes bursts (typically 30 seconds to a few ...

The American sprint star opens up about his year-long training cycle that includes strength sessions and drills he hates—but ...