yes, Fasting Can Save Your Life is such a great one, read it while i was doing my last fast.
And to answer to you violetgrace, while fasting, i usually have peppermint tea, camomille,thym, verveine..not sure of the name in english and actually any herbal tea i like, but simple one, i mean none of these yogi tea for example, with spices ...
Lots of love to all!
marion