"Inner Engineering" by Sadhguru is a 271 page book consisting of two parts. In the first part author writes about his childhood and youth days about how he became Sadhguru. He writes a lot about yoga, health and spirituality, using various stories as an examples. Some stories and examples are actually funny.
In the second part, Sadhguru focuses on body, mind, energy, and joy, answering some important questions.
It was interesting to read the part where Sadhguru wrote about his childhood, travels and first experiences. When it comes to explanations on herbivores and carnivores and why one should be (basically) a vegetarian, I am not sure I am convinced by it as people like Eskimos and the residents of Yakutia and Iceland were not considered (there is winter most of the year and no plants grow, so meat would be the only option).
Also, many sentences start with: "The biggest problem with the world today..." and it seems as if author complaints about the world and the way humans are (humanly) which makes it seem negative, depressing and not true. Spiritual gurus were saying the same thing 2000 and probably 100000 years ago.
Author, as well seems to just drop facts and various unrelated information all over the book, without trying to develop one particular idea very well, which seems chaotic and not boring but looses the point.
So, I am happy that I've read the book (I've learned a lot and it made me giggle), however it also made me think with my own head and judge the statements given.