processed food fast

i know that i don't always eat the healthiest. sometimes the processed foods are the easiest, quickest, and cheapest. plus, i really like chex mix and wheat thins (which i guess are a bit better than potato chips). two things led me to trying this. first, i have some friends who recently went on a fruit and vegie (raw) fast, and they said they felt so much better health wise. secondly, we have recently watched a few documentaries on processed food and how bad it is for you and how most everything has corn in it! anyways, i am going to try it. monday through friday of this coming week i will only eat unprocessed food (including vegies so no canned!). my only exceptions are dairy (milk, yogurt, cheese). i will let you know how it goes...