The further you run, the more impact your spine will have to absorb, so by strengthening your back with Stability ball: Reverse extensions before increasing your distance, your body will be more prepared for the extra miles.
- Lie with your stomach on the stability ball and place your hands on the floor.
- Lift your feet up until you form a straight line between your feet, hips and shoulders (you can bend your arms to help the range of motion).
- Hold the top position for a few seconds.
- Lower your feet with control.
Don’t bounce on the ball.