The trick to becoming a father is staying cool - literally.

And, embarrassingly enough, more than 90 percent of the sperm of a bull or a ram is normal.
The guide from the Human Fertilisation and Embryology Authority advised men how to increase sperm count.
It stated: "For maximum sperm production, the testes should be a couple of degrees cooler than the rest of your body. It may help to avoid tight-fitting clothing, saunas and hot showers."
"This new guide, along with our website, aims to help people with the decisions they need to make the journey through fertility treatment easier and less confusing," the Times quoted a spokesman for the HFEA, as saying.
Experts also warned that cyclists risk fertility by spending too much time in the saddle.
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