
Why does my eye twitch? Why can I only have one cup of coffee before needing the loo? Why do I only feel anxious at night? All valid questions, says Dr Amir Khan. Unless you're having other symptoms, though, it's unlikely you'd visit the doctor to talk about them.
And nor should you need to, as these are all common symptoms that, on their own, mean very little. However, it's good to know where some of our more bizarre bodily functions come from, and to check that they are not some of the vague symptoms we shouldn't ignore.