Thy Yawn-Sigh: Begin by attempting the most authentic yawn you can imagine. Lift your chin slightly; open the mouth wide so that you feel a stretch in the jaw. Feel your voice box in your throat with your flat hand on your neck. It should go down when you yawn. Pull your tongue back along the floor of the mouth, and breathe in deeply, You may yawn better by stretching your arms and shoulders as one might do in the morning.