I currently practice the 16:8 intermittent fasting and find it to be very helpful in maintaining a healthy weight and keeping my energy up. For anyone wishing to try intermittent fasting this book is a good start. It will go into other options and modifications you can do to make this work for you as well as some basic exercises and diet info to make this a well rounded, healthy experience. Always check with your doctor before doing any new diet plan, especially one like this. Even though this book targets women, it will also be helpful to men as well. A good read, well researched and worth a look.