Watch as Coach Scott Christensen explains and shows examples of these trunk-related body weight exercises for distance runners. The focus is on strengthening the hips, glutes, and hamstrings which can improve posture, delay fatigue, and prevent or lessen injuries. The schedule for these exercises is 3 times per week for 20 minutes. Coach covers the following exercises: Full Crunch and variations, Bridge, Superman, Bicycle, and Boat.