Have you ever had a good cry? Maybe it is rare for you, or maybe it happens at the drop of a hat. Have you ever wondered about the biology of tears? Have you ever noticed the physical aspects of your emotional tears? Quivering abs? The prick of tears in your eyes? Chest tightening? Throat hurting? Nostrils flaring? Mouth crumpling? Have you ever been scolded or criticized for crying? Would it intrigue you to know that there...