‘Don’t go out with wet hair, you’ll get a cold!’
My mother always used to say it and I, full of my vast knowledge of science – at that stage mostly gained from SF books and comics – would laugh and go out anyway, hair soaking wet.
Advice you see, it’s always difficult to take when the reasons for it aren’t obvious. Advice, tricky to take and sometimes tricky to give too.

When I actually gained enough scientific knowledge to put ‘scientist’ on my passport (except you couldn’t by then) I still found myself in a position where advice had to taken. From people with more experience, it made sense to listen, but it was harder when they didn’t necessarily know any more about the subject than you, but were just ‘senior’. Of course, when the advice came from somebody reviewing your research paper, you had to take notice or it may not have been published. Difficult then if you didn’t agree with the referee, so you tried to appear to be bending over backwards to accommodate their advice, while sticking as closely to your own guns as possible. An interesting mixture of metaphors there, I’m sure you will agree.
After becoming a radio and TV comedy writer, the next obvious step after being a research scientist, I still had to take advice. Usually this came from a producer and of course you had to listen to this otherwise your sketch didn’t get broadcast. One, now very famous, multi award-winning, comedy producer once told me to take my sketch away and put more ‘melons’ in it. You can probably guess what type of melons he was referring to. I didn’t want to put more ‘melons’ in it; I don’t particularly like ‘melon-heavy’ sketches. I put the ‘melons’ in it though. It was broadcast and got laughs. (I still think it would have got laughs without the increased ‘melon’ count, but I’m not the one with the BAFTAS).
Now as fantasy writer I still get advice and this time it’s from an editor. So what’s the best approach to take?
The point I guess is this. Research has indicated that when colds are doing the rounds you may be carrying the virus but not have any symptoms. Getting a cold head by going out with wet hair can cause constriction of blood vessels in the nose and this may inhibit the body’s immune response, and defences in the nose, and allow that sneaky virus you’ve been carrying to replicate and thus cause your cold symptoms.
My Mum was probably right about the wet hair. Listen to your editor as well, they know things too.