BEING HOOKED ON REALITY TV
People who have a TV in their bedroom have sex half as often as those who don't, according to a 2006 study of 523 Italian couples.
The effect is more marked for the over-50s, with the average of seven couplings a month falling to just 1.5 on average.
According to Dr Edwards, good sexual relations depend on couples communicating with each other, not sitting side by side watching television.
"If whatever you are watching makes you sad or grumpy, it is more likely to affect your libido," he says.
Technology can affect your love life in other ways, too. Sitting and spending more than seven hours a day on an electronic gadget (such as a phone or tablet) can trigger back pain, according to the British Chiropractic Association, and a recent survey of 2,000 people by backpainhelp.com found that 25 per cent had avoided sex because of back pain.