I did a challenge last week for ExerciseTV called “Make Every Day Hump Day!” and challenged everyone to incorporate hills into their workouts. Running hills is one of my favorite forms of cardio, but it’s also like strength training because it really tones the backs of my legs. Give this challenge a try and then also don’t forget to join me on for my other weekly challenges on SocialWorkout.com or you can join us on ExerciseTV’s Facebook page under the Social Workout tab! It’s free, fun and you can win PRIZES!