When we are admitted into hospital our sleep-wake patterns worsen for reasons including disease itself, an unusual and noisy environment, and modified light, food, and activity cues. As a result, inpatients tend to experience shorter and poorer night sleep, several night awakenings, and daytime sleepiness. This may affect prognosis, also in terms of duration of the inpatient stay. However, it may now be possible to do something about it!