“How many hours do you sleep on average at night, and what is the quality of your sleep?” are two of the first questions I ask every patient on the initial interview and all subsequent follow-up visits. While the hypomanic usually gloats over how little sleep he needs, getting by on 3 to 4 hours a night, the lack of quality sleep can wreak havoc on his mood and decision-making abilities. Sleep deprivation results in feelings of malaise, poor concentration, and moodiness, and even accidental deaths.