Watched a show about this book and the author. They say that you get more than just the obvious benefits from growing your own food, but it reduces stress, and you are exercising while keeping up your garden. In Costa Rica specifically they have linked gardening to an extended life span. What a great way of life to take up. Do something good for the enviorment, save some money, eat some great food, and live longer. What more could you ask for. It is a very interesting book, I included a link for anyone who would like to check it out.
Thank you
Life in Earth
www.lifeinearth.com
http://www.bluezones.com/