Not to many things feel worse than a muscle strain that could’ve been prevented. Avoid an injury before they occur by stretching daily to relieve & reduce muscle tension. These stretches are good for everyone, not just runners. 

http://www.livestrong.com/slideshow/1010451-8-stretches-before-running/?utm_source=newsletter&utm_medium=email&utm_campaign=0506_bt_curated_f