Advanced: Perform the exercise as shown, but continue tucking the knees until they are under your torso and then lift the hips upward toward the ceiling. This position resembles a partial handstand, with the arms straight and wrists directly under shoulders. Do not attempt unless you already have established strength and balance capabilities.
The most challenging part of the Stability Ball Knee Tuck is maintaining balance on the ball as your body is moving. For safety, move in a slow controlled manner, and use a spotter, or work with a qualified fitness professional who can help you master the exercise. Individuals with medical conditions or joint problems should check with their doctor before attempting any new exercise.
Begin with one to three sets of Knee Tucks, ending the set when you have fatigued the muscles. This exercise can be performed every other day, although this depends on current fitness level and must take into account other exercises in your routine.