Kneeling Alternating Raise
Try this exercise before moving on to an advanced level, acquiring the balance needed to execute more difficult exercises. Start on your hands and knees. Straighten one leg all the way back, still on the floor.
Proceed to slowly lift one arm and the opposite leg until they are parallel to the ground. You may choose to lift only one limb at a time, for balance. Maintain the position for 15-30 seconds and switch.