During my working life I was a regular blood donor. [NB: In Australia it is done on a volunteer basis without any payment as I have heard happens elsewhere] Of those 76 donations over 20 years, there was a few times that the Nurse would need two or three jabs to find the appropriate vein. This seems to have got worse over the years, up to last week when I went for a blood test and she had six shots at me...after each one she would ask how I was...both arms, both wrists until she finally jagged me on the sixth go! I think she said muttered something to herself about dancing veins? Anyone heard of this effect? Michael?? What happened on a couple of occasions, was although she was on target, my vein literally "moved/sprung" away! Anyone else had this problem?