The Swiss Ball Jackknife

The Swiss Ball Jackknife

A video demonstrating the correct technique for the Swiss Ball Jackknife. For full instructions for this and other Swiss Ball Exercises, visit my web site: s…

This six-week plan is for runners with a weekly base of 30+ miles that are looking to take on their next 5K like a pro. The training program includes 6 activ…

3 thoughts on “The Swiss Ball Jackknife”

Comments are closed.