HOW: Get set-up in a tall kneeling position with something under your knees for comfort. You can have the top of your feet on the ground or be up on your toes. While keeping your core tight and trunk straight, perform the exercise by leaning backwards as far as you can, then push your legs/shins into the ground to return to starting position and repeat.
FEEL: You will feel a stretch in your quadriceps as you lean backward. You will also feel your core muscles working to keep your trunk in a good position. Your quads and glutes will also be working to return to the starting position.