The Devil's Diet
It is based on the number 666.
You only observe the diet 6 days a week, but still keep portion control on the seventh day. (That is the first 6.) You can only eat foods with no more than 60 grams of fat per about 300 calories. The 300 can fluctuate a bit. (This is the second 6.) You have to do some sort of exercise for 60 minutes each of the 6 days you are on your diet. (That is the last 6)