You can actually realign your entire body just by moving your head. Forward head posture can add up to thirty pounds of forward pull on your neck and that is enough to pull your entire body out of its ideal alignment and reduce your vital lung capacity by up to 30%! One of the most effective postural exercises is the chin tuck. You can reverse the effects of gravity and early aging by retraining your body to stand long with the simple chin tuck. Try it when driving but just at the stop signs!