In this Fitness video tutorial you will learn how to do medicine ball hay bales exercises for runners. This is a fantastic general strength exercise. This is a simple routine to do. Keep your feet hip width apart, drop the ball, bend down keeping the back straight, catch the ball with both hands and lift it over one shoulder as if you are throwing a hay bale in to a barn. Repeat the same step; this time lifting the ball over the other shoulder. While lifting the ball over the shoulder, twist your body from the waist up. Now do the same routine but with one leg. This is called single leg hay bales and this is important because running is a series of single leg hops.