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But – science is rarely perfect, and this is the best we’ve got. The most striking result is that there was a huge amount of variation.

Besides, in addition to all of your favourite models, you will find thousands of new girls who look forward to meeting you!

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The best study we have estimating the average time to ejaculation in the general population involved 500 couples from around the world timing themselves having sex over a four-week period – using a stopwatch.

That is as practically awkward as it sounds: participants pressed “start” at penile penetration and “stop” at ejaculation.