Spoiler: “I’m not aware of any good explanation for why it happens,” says Allen Richert, associate professor of psychiatry and division director of sleep medic

Spoiler: “I’m not aware of any good explanation for why it happens,” says Allen Richert, associate professor of psychiatry and division director of sleep medicine in the University of Mississippi Medical Center’s Department of Psychiatry and Human Behavior. There, spared you from an obnoxious full screen ad for gin.