Instruct: Classify an Amazon review into positive or negative sentiment.
Query: These exercises will change your life!

I picked up this book in 2000 out of pure curiosity. As a health enthusiast, I was looking for something to give me an edge as I aged. I began with plenty of healthy skepticism and although I was very physically fit, found the exercises to be challenging at first. I soon got to the 21 reps. Now, 9+ years later, I have been doing them daily.I know that these exercises are a key to my vitality and also opened up a deep spirituality in me that I had not known before. That was quite unexpected. Side effects include feeling younger, more energetic and also more connected to something out there that wants to help you live a full and joyful life. More than a great gift for the aging baby boomer, this could very well be the self-care intervention to save billions of dollars. I swear by these rites and I will do them as long as my body is willing.