Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Practical Advice

I thought I'd heard every statistic and help tip that existed re: sleep problems and sleep hygiene -- keep your room cold and dark, wear earplugs, etc. But refreshingly, this book had a few tips I hadn't seen or heard elsewhere -- including descriptions of several yoga-like relaxation and meditation exercises to help you unwind.I'm particularly fond of the concept of a "power down hour" where you spend a full, committed hour to unwinding before bed. Though it sounds unrealistic in the modern world, that anyone would take a full hour to do this, the cool thing is that 1/2 of this wind-down hour is meant to be devoted to doing what the author calls "mindless chores" like folding laundry. Makes a lot of sense to me, to save these chores for late night, when doing them may actually help put you to sleep!There are a lot of tips like this in the book. Highly recommended overall.