I am curious since this post is some 19 months ago have you done anything different? I did it last night and could not complete because I had to go to the bathroom 4 hours into the treatment. I cannot find anything out there that gives any information on how much water you should or should not drink during the day before you do the CST. Do you have any idea how much a person should hydrate themselves before the CST? I have had kidney failure in the past and have to be careful. Here is what I did.
I can't imagine how hot it got if you rubbed it on you I felt like I was experiencing a third degree burn when in the tub. Oh and I did not cover my sensitive area and it didn't seem to bother me at all.