It's time to combine some booty-toning hills with some calorie-torching cardio to work your backside. Working the incline on the treadmill targets your hamstring and glutes! This calorie-torching workout combines bursts of running with quick hilly walking as you play with speed and incline. It moves so quickly that there is no chance for you to get bored.
Feel free to adjust the incline and speed so this workout meets your level of fitness. Not into running? Try this elliptical workout that targets the backs of the legs, too. No access to machines? Take a hilly walk!
Click here for an image-free, printable version to take to the gym.