Thanks to all for your responses. I am not one for "putting on a show" if you will, I just want to make sure that all my symptoms and pain levels are present at the test. A truley accurate measure of when things are there "worst" I guess is what I am after. Obviously if I lay around in a lazy boy for a week prior I wont be "symptomatic". However if I maintain a high level of activity prior I will have all the pain and discomforts for the test.