This book is a blend of western science and ideas and practices from yoga, but mostly science. I was able to learn about the science that might justify practices like "alternate nostril breathing." I learned about how flow through each nostril varies depending on time of day, mood and brain activity.

I became so fascinated I went on to use the neti pot (for cleaning nasal passages). Then I learned how to pass a sterilized string from one nostril, to the back of the throat, and then out the other nostril (for cleaning). The book mentions such things.

I suppose I obsessed on this because I realized through reading this book that one nasal passage always seemed blocked. And indeed, after visiting a doctor, it turns out I have one nostril significantly blocked by a polyp.

But this is probably an example of how these books can get you in trouble, or waste your time. The book helped me learn and discover something important about myself, but I might have caused myself some damage. I probably should have consulted a doctor much earlier in the process.

But still, a good book.

I am in a Yoga-Teacher-Training-Course, this book, Science of Breath, was recommended by a friend. It teaches lots of good stuff about the breath and I am glad I read it, however, it was written in the early 1900s and there are some prejudices in there about human beings and that disappointed me somewhat. Hopefully a reader can focus on what the book is actually trying to teach, rather than get hung up on what science did not know in the early 1900s.