Today's Move-of-the-Week takes the plank to a whole new level. Using the instability of a ball (or walking out if you don't have one) it forces your core, shoulders and glutes to work harder to keep you balanced. This move is great for an awesome core workout, as well as shoulder stability and glute strength.

Tips to Keep In Mind:

• Keep your knees, hips and shoulders in line
• Keep your core tight
• Pull down using your lats to move back and forth