This 7-Minute Walking Trick Could Add Years to Your Life, Says Study This 7-Minute Walking Trick Could Add Years to Your Life, Says Study If you love exercising and enjoy the latest fitness trends, you're well aware of the fact that we're living in—at least for the moment—a high-intensity interval training (HIIT) world. After all, it wasn't that long ago when you needed to be a military cadet to know how to properly perform a burpee. Today, it's all about banging out more moves in less time—quick sprinting intervals, lightning-fast 5-minute workouts, and Peloton-style spinning classes where you pedal to your max for short periods of time to get your heart rate soaring through the roof.