We've all been guilty of playing favorites at one point or another, so the thought of switching up your favorite workout routine may sound daunting. But adding variety to your fitness program is key to challenging your muscles in new ways. That's why we love this versatile playlist, which is perfect for any 30-minute treadmill or elliptical workout. Just download the songs listed below and get ready to kick your workout into high gear!
| Feb 27, 2012