When mine started coming in, I wasn't used to that area being so sensitive. I remember that at one point, I needed to check behind the toilet for something. I did what I would always have done, and laid chest first on the toilet lid so I could reach more easily. Bad idea - the searing pain that shot through my chest caused me to immediately roll onto the floor, and lie there for a while catching my breath. I have learned the hard way to keep a safe distance between my chest and other objects.
