In the fitness world, the word “miracle” gets thrown around like a two-pound dumbbell. But when it comes to high-intensity interval training (HIIT), a very short workout, the benefits you’ve heard about are both legitimate and—we’ll say it—miraculous.
HIIT is a combination of brief, very-high intensity bursts of cardio exercisefollowed by equal or longer periods of rest. Think 30 seconds to a minute of sprinting, followed by a minute or two of walking or slow jogging. Repeat this cycle for just 10 minutes, and you’ll complete a HIIT workout.