MH 108
An orange juice book I plan on for BOOK 4 will have allot of hardening ideas.
The cold/hot water shower will drive blood in and out, this will make you tuff/strong, BUT, the mucus particals that are too big to be sweated out will become trapped in your skin and cause you to age. The sitz bath method will draw these particals down and out the Lymph glands.
There are many, many water therapies, not one compares to the Sitz and the ama tried to turn it around backwards and bury the old medical method.
MH