I hope you won't dread it that badly - really it was not severe. It was just annoying and uncomfortable. Some folks in there were sleeping through the night. I just happen to be really sensitive to the glue that was used to attach the sensors, and I'm dealing with a lot of pain anyway. On top of the bladder issues it was just more challenging for me than most. I suspect that most folks really won't find it traumatic or painful. Just a bit uncomfortable. The people doing the testing were very nice and helpful. Not worth dreading really!