This might sound familiar, but I have a problem with my computermouse. Whenever I use the computer my hands tend to get very cold after a while. Afterwards, it's realy hard to play bass (well not hard, but my hands are just not as flexible and they seem to be, well, stiff and cold). I figured out that this has to do with my bloodcirculation. In order to get it running again I wash my hands with really hot water and soap. This helps but I was hoping that there might be a permanent solution for this problem..A certain hand position? A specific computermouse? I try to keep my arm "floating", but it's hard to keep that up for long periods of time. Any help?