This is one of rotation diets. There was the Rotation Diet book written by Martin Katahn, PhD. He was first to develop calorie rotation plan.
You go on a 600 Cal. a day for three days, 900 Cal. a day for the next four days, then to 1,200 Cal. for a week.
After that you repeat the cycle (600+900+1200) once again and enjoy your well deserved vacation from dieting. The vacation is exactly what prevents your metabolism from slowing down.
Now, the authors of the "For Idiots" plan seem to make this easier to follow because they made it an online diet where you have your client area, logs, etc. The program is being sold through clickbank. Try seeing for yourself following this link:
http://bestweight.4idiots.hop.clickbank.net
Hope it helps,
Tanya Zilberter, PhD
http://bestweight.4idiots.hop.clickbank.net
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