Thanks Elfrasho and 4000 for your comments. Very interesting as I am not aware of any nerve or cervical disc issues. However, this has got me thinking, I have for the last 6 months been learning about 20 new songs and have been sitting on the sofa at an angle and did start to get lower back pain on one right (fingering arm side). I was rehearsing pretty much every night for about 2-3 hours. So being a typical male, ignored the signs and carried on until it hurt a bit too much so I made sure I sat a little less twisted. However, one afternoon, I did a little bit of rehearsal pre gig. Stood up and then I got the pain and couldn't get down again without lots of pain. Lots of stretching and help from the wife to get up and down eased the pain (not totally) and I was able to go and do the gig. The twinge lasted a day or two and thankfully hasn't returned as I kind of learnt my lesson and sit straighter or change positions. So might be related or maybe not. I have always suffered with stiff neck and shoulders all my life so maybe its old age related. Also this year, the knobly bits on the inside of my elbows sometimes hurt. Not all the time but if I press against them then I can feel a mild pain. Might be related or might just be old age again. Oh, and the inside of my left knee, sort of the top on the side hurts, pretty much all the time. Again, doesn't stop any movement, running, walking but it just hurts and if I press my finger against it, then I feel some pain. I think perhaps I'm falling apart.