Most books in this genre make me feel bad about what I am not doing or do not feel like I CAN do. That is how I felt reading this. It has a lot of dense, good information but the style was hard to read. Sometimes I felt lectured at. I don't know what to do about that chemical in toothpaste she mentions...I can't afford a sleep tracker or stop the antipsychotics that help me sleep...I can't get my heart rate as high as she recommends because of chronic pain. I am already doing some things she recommends but this book seems like a prescription for perfection.