The relationship between sex circadian rhythm and sleep

Men often go to bed later than women; and weak women often lose sleep more than men. Why are there such differences? Through research, American and French scientists have partly lifted the answer.

Harvard Med researchers (Boston, USA) measured the biological cycle length of 52 women and 102 men aged 18-74 in a special environment - lack of time information for purpose Clearly identify the biological clock cycle speed within each person for a period of 2-6 weeks.

The results show that: The average length of the biological clock in men and women (regardless of age) is usually 24 hours. The average length of the biological cycle in women, on average, is 6 minutes shorter than in men. Women have a chance to own a biological rhythm of less than 24 hours more than men 2.5 times. This means that in women, the length of time established by the biological clock is completed before 24 hours have passed. Therefore, this change requires the biological clock to be adjusted daily compared to the length of 24 hours / day.

This result may explain why women often wake up earlier than men. Indeed, if the adjustment of time does not work, every day, watches in women tend to run earlier and they will need to go to sleep and wake up a little earlier than yesterday.

This finding will help scientists find new therapies for treating insomnia or phase shift in ' love story ' .