For medical reasons that I don't quite understand, nor wish to bore you with, I'm having a course of vitamin B12 injections.
Today was injection number four and the nurse asked how I was feeling.
'OK', I said, 'should I be feeling any different?'
'I've heard', she said, 'that Madonna's dancers, before they go on tour, have vitamin B12 injections and some people have said it makes them feel much more 'energetic'.'
I mentioned this to Jan when I got home and she said, 'I've not noticed any difference, you still seem bone idle to me.'