LONDON (Reuters) - British researchers studied the proportion of men who devote part of their time to sleep in the middle of the day, compared to women.
The study found that 13 percent of men slept in the afternoon, compared with only 6 percent of women, on a sample of 1,000 men and women.
The study, published in The Daily Mail, found that a quarter of women never had a nap during their lifetime, compared with only 16 percent of men.
"Sleeping 20 to 30 minutes is enough to relax the nervous system and reload the entire body," said Lisa Artis, a sleep therapist in Britain. "It also reinforces the feeling of alertness."
"Any time longer than this will put you into a deep sleep and make you wake up feeling sleepy."