Research has suggested that the myth of beauty sleep may have some truth to it after all.
John Axelsson from the Karolinska Institutet in Sweden led the study, which looked at a total of 23 people aged between 18 and 31.
Sixty-five observers were bought in to assess whether the subjects appeared more attractive after a good night's sleep or when they were sleep-deprived.
To ascertain the differences, photographs were taken of the volunteers between 14:00 and 15:00, both after a good night's sleep and a minimum number of hours' rest.
The observers were then shown the results without knowing the 'sleep status' of the individuals.
They judged that the images taken after sleep-deprivation made the subjects appear to be less healthy, less attractive and more tired.
People are recommended to have between six and eight hours of sleep each night, although the ideal amount will differ depending on the individual.
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Sleep disorders treatment news : 18 December 2010