More than 70 percent of all women have orgasms as a result of direct clitoral stimulation – and, unlike men, we can enjoy multiples.

Forty-seven per cent of women have their first orgasm through masturbation, according to sex expert Dr David Devlin – and the average age to experience it is 18.

A recent study found that 48 percent of regular headache sufferers had their pain cured by orgasm. Not only that, but it actually worked much faster than painkillers.

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Women who feel insecure about their relationship are less likely to orgasm, says Seymour Fisher, author of The Female Orgasm. So, stop checking up on him and get sexy instead.

Some women faint when they orgasm and, in very rare cases, have had heart failure and died, which might explain why the French refer to orgasm as ‘le petit mort’ (the little death).

The first electric vibrators hit the market at the start of the 20th Century. People had to wait nine more years for the vacuum cleaner and 10 years for the electric iron. Imagine that!

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The average female orgasm lasts between six and 10 seconds – although for some lucky girls it can last up to 20 seconds.

At the moment of orgasm, certain areas of your brain that control emotion shut down. The area that processes fear is deactivated and your instincts that keep your safety reflexes in check also turns off momentarily.

When you orgasm, your body produces quadruple the usual amount of the bonding hormone oxytocin, also known as the “cuddle hormone”. This lowers our defences and makes us trust people more.

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Seventy per cent of women have faked an orgasm. Some ways men can tell it’s real include retraction of the clitoral hood just before orgasm, a racing heart, dilated pupils, vaginal muscle spasms, arched feet and stiffened nipples.