Czeisler

A woman sleeps in her bed. (credit: Peter Macdiarmid/Getty Images)

Who Needs More Sleep, Men Or Women?

Between work and family, and all of life’s other obligations, it seems much of America is sleep deprived. Millions of people are trying to function on less than eight hours of sleep and that can cause irritability, lack of concentration and even create trouble in a marriage.

11/18/2011