Midge,
My 3rd one is tomorrow(Monday). My second was really rough, but I think I've learned something....and your question and Val's answer are good.
Wish me luck? I'm going to take lavendar essential oil, drink camomile tea, and hope we can clean out whatever is 'stuck'. Three alternative people have said I have "large intestine issues" among other things. Especially in the upper left top of colon, and that's the medulla area on Andreas colon reflexology chart, and dang, sure enough, I felt the back of my head and it's 'scrutiatingly' painful.
I think there is hope for my brain, and my pain! Sometimes the only way out is through.....