My concern was that the daily flexing of my skull might weaken it at the point of flex, kind of like bending a piece of metal back and forth, eventually it breaks at the point of flex. I was also wondering how my brain would be affected by the constant change in pressure because of the flexing. I do...

I noticed that the strap on the top of my head causes about a quarter inch indentation into my skull. Strap tension was adjusted just tight enough so there where no leaks (the mask was comfortable to wear). Has anyone noticed this? I changed the location of the strap by sliding it toward the back/to...