While sleep requirements vary slightly from person to person, most healthy adults need between 7 to 9 hours of sleep per night to function at.
WebMD discusses how much sleep adults of different ages need and what adults can do to get the recommended number of hours per night.
Most adults need 7 to 9 hours a night for the best amount of sleep, although some people may need as few as 6 hours or as many as 10 hours of sleep each day.
As you get older, however, your sleeping patterns might change. Older adults tend to sleep more lightly and for shorter time spans than do younger adults.
Below is information? including symptoms, causes and possible treatment options -- on some of the more common sleep-related problems and disorders in .