Although quite different in style, yoga and running are very complementary. Yoga is perfect for stretching out all those muscles worked, and often overworked, while running. Here's a short yoga series created especially for runners by Kimberly Fowler, founder of Yoga For Athletes and yoga guru of the LA Marathon. This yoga series is great for lengthening shortened hamstrings and opening tight hips - both side effects of running. Get ready for marathon season and stretch out!