This information is important for married couples who want to stay happily married.
A new study points out that sleep has a bearing on the quality of marriage.
A study revealed that wives who had a problem falling asleep carried an enhanced risk of being unhappy in their marriage.
"Wives who took longer to fall asleep the night before reported poorer interactions with their husbands the next day," said Wendy Troxel, assistant professor of psychiatry and psychology at the University of Pittsburgh and lead author of the study.
Sleep deprivation causes the victim to become angry and irritated unreasonably. The usual tendency when a person is irritated is to vent it out on the spouse.
"For sure when someone is sleep deprived they become more emotionally brittle," said Susan Heitler, a Denver marriage counselor and co-founder of poweroftwomarriage.com. "A situation that might have been humorous or just slightly frustrating looks downright annoying. It's like putting on dark glasses, to not have enough sleep."