The manual is divided into 14 chapters, each chapter into 7 subsets: Philosophy, Postures, Breathing, Routine, Healing, Diet, and Meditation - all treated with equal gravity, although meditation does figure prominantly throughout Raja Yoga. Yoga is rooted in religion, and so if meditation and religious sentiment don't appeal to you, you might just want to go find a local "hatha" yoga class at the YMCA, or gym. However, I will say that if you open yourself up to the basic philosophy presented here, and surrender skepticism towards Kriyananda's medical advice (which seems rather incredulous at times) you'll find yourself believing instead of doubting. The world is full of mystery (travel and see for yourself!), and to perpetually wrap oneself up in self-protective doubt is unproductive, and ultimately, harmful to spiritual (and physical) growth. Skepticism, okay; but yoga teaches one to trust, and open oneself up to incredible possibilities, and I think this lesson in itself makes Raja Yoga invaluable. I too didn't think I'd be able to do half of these postures when I first listened to the record (the cd that comes with the book is its one mediocre flaw, as it only contains an abbreviated version of the Yoga Postures record I found, along with a lecture by Kriyananda that you may or may not find inspiring. You don't need an audio supplement to do yoga, but it really helps to hear Kriyananda's magnetic voice. I suggest contacting the "student support" e-mail address provided in the introduction for records and cds).