Most men would probably say they’re on pretty good terms with their ‘little fella’, but for National Men’s Health Week (13-19 June), NHS Choices are encouraging men to get to know their penis even better.

For example, did you know you could break your penis? Were you aware that a healthy man can have between three and five erections lasting up to 35 minutes while asleep? Did you know shorter penises increase more in length when they become erect than longer ones?

If some of these came as a shock to you, there’s more – and even if they didn’t, NHS Choices suggests men log on to learn more about their penis and how to keep it healthy at www.nhs.uk/livewell/penis-health.

The somewhat appropriately named Dr. Knut Schroeder, NHS Choices GP and author, said: “Many people find it embarrassing to ask questions about their manhood. As a result, there are many commonly held misconceptions about what’s considered ‘normal’ when it comes to the penis. NHS Choices therefore offers the perfect forum for men to get the facts, which may help them to alleviate any concerns they might have. Of course, if a man notices anything unusual about their penis and is genuinely worried, I would strongly advise them to visit their GP.”