Backaches

And again: backaches. On Thursday I had training and halfway I did nothing strange, but suddenly my back started to hurt enormously. The night following was a drama and I couldn't sleep the bigger part of the night. Went to bed at 23.00, was still awake at 2.30 and had to get up at 7.00... Imagine. It is getting better, but still not fantastic. Don't a clue what is wrong, but I think I need physiotherapy again.