>Conventional wisdom holds that the female biological clock is like Big Ben and ours more like a dodgy garage-shop digital.

A myth, says Dr Satoshi Kanazawa, an evolutionary psychologist from the London School of Economics: “Much of our data actually suggests men are more pronatal than women,” says Kanazawa.

Computers kill sperm: HIT

The heat generated by just one hour with a PC perched on your groin will raise your testicle temperature by almost 3 degrees Celsius.

Yep, hotter than a lap dance, a laptop will cook your eggs to a point that – according to the State University of New York – can adversely affect sperm production. If you don’t do any typing on the move, don’t think that your balls are totally cool, either.

“Your testicles dangle outside your body because they need to stay cooler than the rest of you,” says Wanda Georgiades of Care fertility, the UK’s leading independent fertility specialists.

“But we see plenty of fertility issues in men who sit for long periods getting hot under the belt – like taxi and long-distance truck drivers.” So get up and about.