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?

.Collage Video "Walk Yourself Fit with Chris Freytag" lets you stomp, lunge and power walk in the privacy of your living room. The workout suits someone who is easing into exercise - or an avid ...

Collage Video "Personal Training with Chris Freytag" lets you customize your workout, mixing and matching from nine separate workouts. Decide what you need to meet your goals. There's also a bonus ...