Some women have now revealed what really scores with them between the sheets.
Single comedian Shazia Mirza, 34, said that some of her friends revealed that during sex they are mentally writing a to-do list, remembering clothes they have to wash, what they've got to buy at Tesco's or those shoes they love in Selfridges.
And some women even think of men they secretly fantasise of.
"A friend of mine, who really loves her husband, told me that during sex she can't help thinking about all the men she secretly really desires, like Jeremy Beadle and Jeremy Paxman," the Sun quoted her as saying.
"I've been married twice and had many lovers and to be honest, with past lovers I've been so bored in bed, I've taken to compiling mental grocery lists and calculating exactly how many shoes are in the wardrobe (82 pairs)," said author Kathy Lette, 51.
"Most wives are taken for granted. But how we'd like to be taken is by a muscular-thighed Adonis with pecs appeal.
"Luckily sex with Johnny Depp is only the flick of a light switch away. Ah, Johnny - a man whose sex appeal is so deadly it should be registered at police headquarters as a lethal weapon.
"Doing the horizontal tango with George Clooney is also amazing - if only he'd been with me at the time!" she added.
Sarah Millican, 33, is in a relationship, and she said: "I never walk out of a film at the cinema. I'm the same with sex. I always think it might get better. To be honest, as long as I've got a bag of Maltesers, I'm not going anywhere." source