5 Ab Exercises for Runners

Raise your right leg and extend it behind you as you lift your left arm and extend it in front of you. Hold this position for about five seconds, return to the starting position and repeat on the other side.

For more of a challenge try: All Fours with Weighted Balls

Russian Twist

Begin by lying on your back on top of a exercise ball with your knees bent and your feet flat on the floor. Extend your arms toward the ceiling and bring your hands together. Keep your arms straight as you twist from side.

For more of a challenge try: Russian Twist with Weights

Test your speed and sign up for a race.