The survey’s results found fat men could last an average of 7.3 minutes during love-making, while their skinnier counterparts only lasted 1.3 minutes. Male politicians only lasted 0.9 minutes.

Researchers spent a year recording the body mass index (BMI) of more than 500 patients referred for specialist treatment. They compared these results with 500 other male patients who lasted longer during sex.

Results concluded that the men needing treatment for premature ejaculation had lower BMI scores, meaning they were fitter. “We found that premature ejaculators were leaner,” the report stated. “Men who go to the gym a lot look good, but they are terrible in bed.”