A female may rub sleep from eyes.Logical formLearned from9 sentences. Sleep can be from a person.Logical formLearned from9 sentences. A person may understand sleep.Logical formLearned from9 sentences. Some hours can be with sleep.Logical formLearned from9 sentences. Kids may go to sleep.Logical formLearned from9 sentences. (Sleep deprivation) may have an adverse effect.Logical formLearned from9 sentences. (Sleep studies) may show women.Logical formLearned from9 sentences. Some surveys may compare (sleep behavior).Logical formLearned from9 sentences. Sleep may undergo movements.Logical formLearned from9 sentences. (Hotel rooms) can be conducive to sleep.Logical formLearned from9 sentences. (Sleeper berths) may promote sleep.Logical formLearned from9 sentences. Changes can be in (sleep habits).Logical formLearned from9 sentences. Treatments can be for (sleep apnea).Logical formLearned from9 sentences. (Sleep problems) may undergo a treatment.Logical formLearned from9 sentences. Treatment can be for obstructive (sleep apnea).Logical formLearned from9 sentences.