Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Daily Sauna User

The book was very informative in a subject that is not well studied. I'm following a daily sauna therapy and so far (after 3 months) the only benefit I have received is stress relieve. In other words, I have not experienced any of the benefits mentioned in the book.One of the things that I disagree with the book is in the recommendation of stop doing any type of exercise for the duration of the therapy. I guess the jury is still out on the health benefits mentioned in the book.