Want a great core workout?! Katie Cardoza, trainer at Wave House Athletic Club located in San Diego, shows you how to do a Swiss Ball Jackknife. Add this ab exercise into your workout routine to increase your fitness training. Stay tuned for more workout tips from our fitness video series.
This video involves the performance of challenging physical activities. We urge you to seek a physician's approval prior to engaging in any of the activities or exercises presented in this video.