For far too long, running (no shade) has been heralded as the most effective form of cardio, with the many science-backed advantages that this easily accessible form of exercise can bring. But it ...

Here’s your sign to take it up a notch. Everyone who’s into cardio has their favorite type—whether it be regular HIIT workouts or hitting the StairMaster. While all are undoubtedly good workout ...

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Before adding higher-level workouts to your plan, you need a consistent mileage base, established fueling and hydration habits, and the ability to recover well between quality efforts, explains ...

Want an exercise program that helps you work out smarter, not harder? You've found it. The Women's Health+ Ultimate HIIT Challenge is a week-long program that combines high intensity interval training ...

In 1996, Dr. Izumi Tabata published a groundbreaking study on high-intensity interval training, or HIIT, and its effects on aerobic (VO₂ max) and anaerobic capacity in young, physically active men ...