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Marriage may improve your sleep, and better sleep may improve your marriage, two new studies suggest.
Women who are married or who have stable partners 1 to sleep better than women who have never married or 2 a partner, according to research from an eight-year study 3 at the Associated Professional Sleep Societies annual meeting. They also found that marital (婚姻的) happiness lowers the risk of sleep problems, 4 marital disharmony heightens the risk and women who were single 5 the start of the study but gained a partner had more 6 sleep than women who were 7 married.
The study included 360 middle-aged women. Researchers used in-home sleep studies, activity monitors to 8 sleep-wake patterns and relationship histories to look at the 9 stable marriages, unstable marriages and marital changes, such as a 10 had on sleep.
Another small study of 29 couples found that on a 11 basis, the quality of a couple"s relationship and the quality of their sleep are closely linked.
In that study, from the University of Arizona, 29 couples who 12 a bed and did not have children 13 sleep and relationship diaries for fifteen days. The results showed that 14 men get better sleep, they are more likely to feel 15 about their relationship the next day. 16 for women, problems in the relationship were strongly 17 with poor sleep for both themselves and their partner.
The 18 from both studies suggest that sleep and relationship happiness are closely linked. The lesson for couples, 19 those who are struggling with problems, is that paying attention to sleep habits may help 20 other issues in the relationship.

A.especially
B.peculiarly
C.specially
D.exactly