HIIT routines are typically both high intensity and high impact. But you can still get the hard work while being easy on your body. By Jen Murphy High-intensity workouts are designed to be hard. The ...

This 20-Minute Cardio Workout Spikes Your Metabolism for 36 Hours Without Stepping Foot in a Gym originally appeared on Men's Fitness. Can't get to the gym but need to get some cardio in? Changes are ...