Kris Gethin's Muscle-Building Trainer, Day 55
Make the most of active rest by taking your cardio session outside today!
Make the most of this day of active rest. You're going to want to get in your 30 minutes of cardio, but there's no reason to constrain yourself to a brick-and-mortar gym.
Try to switch things up and trade in the treadmill, elliptical, or stationary bike for a jog outside or a few laps in the pool. Remember that doing cardio on your active-rest day is meant to keep you agile while still challenging the body. A hilly bike ride might be the perfect go-to—take in the fresh air and atmosphere, so cardio doesn't seem like such a tiring task.