We all have to set our biological clocks each day because none of us has an inner clock thats set to exactly 24 hours. If it was, we couldnt adjust to seasonal differences in night and day.
What the study found is that mans biological clocks tend to run slower and womens faster. In fact, some women - more than one in three - have inner clocks that run especially fast. They complete a daily cycle in less than 24 hours.
Ms. DUFFY: If your cycle length is shorter than 24 hours, you need evening light to keep you synchronized.
KNOX: And darkness in the morning. Thats just the opposite of people whose inner clocks run on a cycle thats longer than 24 hours. They need a daily dose of morning light to reset their biological clocks.
Maybe the biggest implication of the study is that there may be millions of women who fight every day against their inner clock to do what they need to do.
Dr. CHARLES CZEISLER: : I definitely think that thats happening out there.
KNOX: Thats Dr. Charles Czeisler, the studys senior author.
Dr. CZEISLER: I think many women are chronically sleep-deprived because their work obligations, theyre taking care of children, helping them with homework whatever is only be done in the evening hours precludes many women from getting to bed early enough to get a full, sound night of sleep.
KNOX: A lot of women can identify with that. But Czeisler also says many women dont see their early-to-bed, early-to-rise tendency as a problem.
【英语阅读: 女性生物钟走得快】相关文章:
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