I hate it but I do it because I have Fibrocystic Breast Disease (and 3rd generation in my family with it and I was diagnosed at 22 yrs old). The pull on the muscles in my neck is very painful and the last time the idiot tech grabbed my left arm and yanked it into position before explaining what she was doing, followed by an audible popping sound and me exclaiming OW! To which she told me I should have told her I had an injury. Well, I didn't have one before her assault.

I should have immediately notified the hospital but didn't because I didn't realize how much damage she did. Here I am almost two years later intermittently participating in the PUP thread -- all due to her incompetence.

Just make sure you don't let the techs do anything without explanation first. You'd think this was a no-brainer.