Your piriformis muscle runs deep beneath your gluteal muscles, downward from your sacrum to the greater trochanter of your femur. Because it sits across your sciatic nerve, if it becomes tight it can irritate or impinge the nerve and cause significant pain. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.