The "Adam's Apple" is the container of the vocal cords. When we swallow it moves up to the best of the throat in order to assist keep food or liquid from heading into the lungs. When we yawn it drops down reduced in the throat. These are normal reflexes, but a high (swallowing) larynx (Adam's Apple) surely functions against good singing. When it rises it reduces the room involving the vibrating cords and the top of the throat, tremendously affecting high quality and the bright harmonics of the sound. If the larynx rises (a natural reflex) as we sing large notes our seem becomes pinched, and the higher array is severely limited. In brief, if you want to become a excellent singer you Need to train the larynx to stay reduced in the throat.