Jack Knife Exercise Demo Video & Info
Jack Knife Exercise Demo Video & Info
Dec 11, 2014
catalystathletics.com
the Prone Jack Knife! 💪 This dynamic move not only sculpts your abs but also enhances your balance and stability. Here's how to do it: Start in a plank position with your feet on a stability ball. Keeping your core tight, pull your knees towards your chest, rolling the ball forward. Slowly extend back to the starting position. Working with a personal trainer boosts both your physical and mental health. DM us to schedule your FREE discovery call in Lindenhurst, NY _________ All in person trainin
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