Editor’s Note: Before beginning any new exercise program, consult your doctor. Stop immediately if you experience pain. For many people aiming to burn a lot of calories, high-intensity interval ...

Elite athletes use these demanding sessions sparingly for a reason. Here’s how to structure yours without burning out.

Despite the apparent complexity of modern exercise programs, you really have only two options if you want to get fitter: you can train harder than you’re currently training, or you can train more.

Not all intervals are created equal, even if the average wattage is kept similar. Making intervals that vary in intensity can make them really different from constant wattage intervals. Tough short ...

Maybe you’ve tried high-intensity interval training (HIIT) as a way to balance out your running and didn’t love it. But have you tried SIT? A recent study in the journal Psychology of Sport and ...

These 11 trainer workouts target power, cadence, threshold, and sprint strength indoors.

For many people aiming to burn a lot of calories, high-intensity interval training is the way to go. Also known as HIIT, these popular workouts feature bursts of intense activity, such as squats or ...