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CNN
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A 38-year-old man repeatedly tries to force his wife to have sex in the middle of the night but has no memory of his actions when he wakes up.

A married woman in her mid-20s often tears off her clothing and masturbates but remembers nothing when her partner rouses her.

For a dozen years, a 31-year-old man masturbates while asleep, at times injuring his groin. Embarrassed due to his unconscious behavior, he avoids relationships for eight years.