I've got his books and phone ap and did the 7lbs 7 days diet last year. I thought about doing it this year again but found it such a pain making 6 drinks a day with a juicer as it was quite messy and long winded. I found the LT diet easier, lol. But it's good for detoxing and weight loss, I just don't think I could drink another carrot apple & pineapple drink again now.