Hundreds of thousands of embarrassed Britons are suffering in silence every year after injuring themselves during sex.
A survey found that around a third of the adult population – about 18 million people – has suffered an ache or strain either during or after bouts of passion.
Pulled muscles emerged as the most common complaint, followed by back injuries, carpet burns, cricked neck and bashing an elbow or knee.
As many as 40 per cent only realised they were injured the morning after because they were overcome with passion and did not notice it at the time.
Five per cent of people have had to take time off work because of sex related injuries.
Two per cent had even been left with broken bones while others suffered bruised shoulders, twisted knees, sprained ankles or wrists and bent back fingers.
Despite the upholstery, the sofa proved to be the riskiest place to have sex – mainly because of the number of wine glasses and plates left lying around during passionate nights in.
Unsurprisingly, stairs were the second most dangerous place for lovemaking ahead of the family car and the shower. Other hazardous locations included chairs, the kitchen table, the lavatory and office cupboards.
One in 10 people said they or their partner had fallen off the bed during sex and one in 50 said they had fallen off a washing machine during the act.
As well as the risk to life and limb, the survey also uncovered how sex can leave a trail of destruction around the home, with bed frames, wine glasses and picture frames among possessions most at risk.
Some more energetic people admitted accidentally smashing a hole in a wall or breaking chests of drawers or doors.