* Sit with proper posture in the middle of the chair.
* Place one foot on the floor and extend the other leg straight out in front of you.
* Wrap the band once around the ball of the foot of the straightened leg to keep it in place.
* Slowly bring your knee in toward you chest.
* Extend your leg, making sure not to lock your knees.
Return to start position. Repeat, then switch sides.