Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This Breathwalk is a great technique!

This book is easy to read, and the Breathwalk techniques are really quite effective and useful. I now do a Breathwalk in the morning before work, and it's a great energizer. I find that I'm more focused and more productive at work just from those few short minutes of exercise in the morning.I highly recommend this book to anyone interested in fitness, health, yoga, personal mastery, or anything like that.