Boys wear their trousers around their waist, until the age of 12, because their parents buy their clothing for them, concluded the survey of 1000 males. But waistbands plunge with the advent of teenage hormones, plummeting towards the apex of the hips, and far below the underpants position by 16. Dressing for work sees a gradual upward creep between 16 and 20 years.
By 27, the waistband starts returning to the natural waist, a position largely maintained until the age of 36. The turning point is 39 and the demise of the washboard stomach. By 45, trousers will be worn at least five centimetres above the waist, rising to 12.7 centimetres by the age of 57.