This edition includes Arnold Ehret classic book "Rational Fasting" and the foundational yet overlooked "49 days fasting experiment" that he often refers too. With this book combo you will be guided on a transformative journey towards health, longevity, and inner balance. This book evidently emphasizes the importance of periodic fasting as a means to cleanse your system, allowing it to function at its optimal level, but also how to properly fast, what to eat, and gives a drastically different perspective on how to view health.