Credit: "The Runner's Guide to Yoga," by Sage Rountree (VeloPress, 2012)

Despite its unfortunate name, the Locust is a simple and essential pose for distance runners. To do it, lay on your stomach with your hands by the hips, then lift your torso, arms, and legs simultaneously. Hold this for five to 10 breaths and repeat three times.

It's not as easy as it looks. This position strengthens the muscles in your neck, back, and the backs of the arms and legs. You'll find that it improves your posture, especially toward the end of a marathon-length run, when those core support muscles start to give way. Plus, you'll have a little more protection from lower back injuries that start to plague us in our thirties.

Benefits: Improves posture, helps prevent injury.