Overall I think Mark Sisson did a good job putting this book together and supporting his arguments, but the actual blueprint is a stretch I think for the mere mortal to follow. Most of us with jobs and families will have a hard time creating the "zen-like" environment that Mark describes. I would love to wake up with the sun light, drift off to sleep with calming sounds, and workout at the beach, but that just isn't reality. Most of us have a job that requires us to be up before the sun (especially in the winter), and by the time we return home to family and responsibilities, just getting a few minutes peace is miracle. Not that I discount the theories/concepts listed, but I was hoping that the transformation would take in to account, most of us don't have the flexibility in our schedule that Mark seems to have. As for the diet, I didn't find it to hard to make the adjustment, but it does take some focus and discipline to maintain. I will definitely try to keep the principles of this book, but the execution will likely adjust to my current reality.