I was on the Fit for Life program for over a decade. I have been off for the last 15 years. Be prepared to be hungry all the time. High amounts of fruits and vegetables make you gassy. If you cheat, such as having lasagne, you will be screaming in pain. The bloating proves that the system cleans you up. Natural Hygiene was Harvey Diamonds claim to fame. Overall, I was light and lean using food combining.