Cambridge Professor DAVID SPIEGELHALTER has carried out the most in-depth study ever made into what really goes on in the bedrooms. Here, in part three of the Mail's fascinating serialisation of the findings, he reveals how many women are left so dissatisfied by sex they've lost interest in it...
Cinematic depictions of sex invariably feature couples consumed by lust who make love with passion and athleticism and are left sated by their experiences. But the truth is always more complicated than fiction.
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