All day, we're connected to our devices -- or, in the case of my Blackberry, vices -- so it's easy to say that at some point it's best to disconnect, especially when you're gearing up for your daily dose of exercise. Not so, say some experts. Hooking ourselves up to an iPod and hitting the road for a nice long run or bike ride could be more effective than a workout without a soundtrack.

Study: For a Better Workout, Take Your iPod