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 ...

Many runners strive to get faster, and boosting VO2 max is often part of that goal. One way to achieve both: The interval ...

Ready to transform your body and feel more energized than ever? If your goal is to burn calories efficiently and optimize ...

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 ...

Learn more about this metric and the best training sessions to add to your schedule to boost your cardio fitness.

If your workouts are mostly high‑intensity interval training, group classes, and dynamic movements, the Nike SuperRep 3 ...

High-Intensity Interval Training (HIIT) dominated the fitness industry for years. It worked on a simple principle of more results in less time. From quick 20-minute fat-burning sessions to ...

Achieving fitness success starts with setting clear and realistic personal goals. Whether you aim to improve overall health, build muscle, lose weight, or increase endurance, defining these goals ...