Taking hour-long afternoon naps improves thinking and memory in older Chinese adults

(American Geriatrics Society) Study participants who took an hour-long nap after lunch did better on the mental tests compared to the people who did not nap. Those who napped for about an hour also did better than people who took shorter or longer rests. People who took no naps, short naps, or longer naps experienced decreases in their mental ability that were about four to six times greater than people who took hour-long naps.