This subject comes up on here from time to time. I have recently taken advice to use saunas regularly after having more dental work. I have been feeling gradually worse and worse and have only just put two and two together again. Saunas make worse ! I was looking back through old postings on here from a couple of years ago where i was saying the same thing then and coming to the same conclusion. I wish i could remeber stuff like this and had more faith in my own experience. sometimes i think thats half the battle.