There are several diet books that follow this model. I know because I tried a number of them in 2013 & 2014 before finding my doctor and going low carb, low sugar, high fat at the end of 2014.

The premise is the same. A week or 10 days of going no/low carb followed by days of alternating between eating carbs and not eating carbs. It's supposed to trick your metabolism. What it does is detox me from carbs and then gets me going on binge carbing.