10-Minute Calorie-Torching Interval Workout
You won't believe how many calories this routine blasts—in just 10 minutes!
This interval workout, designed by exercise physiologist Tom Holland, features three 1-minute climbs that get progressively steeper. For the hills, increase the incline or resistance on any cardio machine. Outside? Find a challenging hill, stairs, or stadium bleachers. Or speed up during each "hill" instead.