by far my least favorite was the barium swallow. I have a very strong gag refex and it was sooo hard not to hurl that nasty stuff back up. Then I had to wait forever for it to travel where they wanted. Hard to imagine when I have 3-5 BM a day that it would take that long. Then I had the indignity of walking through the hallways to get the stuff moving. I had to laugh at the tech though when she advised me to double my liquid intake that day to prevent constipation. I was like soo not gonna happen. Sure enough was back to my old multiple BM self the next day!