When stretching for runs, be sure you perform the stretch properly. Avoid bouncing or twisting in order to get into a position. Hold each stretch for at least 30 seconds. Also, before running it's actually more valuable to do muscle "engagement" rather than muscle stretches. For example, the glutes are important in running, so one valuable exercise is glute contractions, where you just stand with your legs and feet straight and you squeeze and release your buttocks muscles. You can use this same principle for any muscle.
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Stop relying on willpower, motivational tricks, and pump-up strategies and learn how to top into your inner fitness fire with Chris' 60-minute audio book: Ignite Your Fitness Passion (published 2015)
Relieve your back pain with this easy-to-follow video program designed to get to the root cause of your pain: muscle imbalance. Check out the Back Pain Module.
Learn the basic principles that make a successful fitness program with Chris' 60-page book, Functional Strength: The Key To Pain-Free Movement (published 2008)