...the cyclic ketogenic diet or CKD
Cyclic Ketogenic Diet
This isn't exactly a Ketogenic Diet.
Research by Dr Jake Wilson determined that going on a Ketogenic Diet for 5 days and then carbohydrate loading for 2 days meant that you were only in ketosis for 1-1.5 days.
As most know, when going on the Ketogenic Diet, it take about three days to enter ketosis.
High Body Fat and Less Muscle Mass
Wilson research also found the Cyclical Ketogenic Diet did not increase muscle mass but it did increase fat mass.
Wilson finding were that anyone coming off the Ketogenic Diet and going back to a Traditional Western High Carbohydrate Diet needed to gradually reintroduce carbohydrate slowly. Doing so, produced less fat gain.
As per Wilson, consume 100 gram of carbohydrates for three days, then increase it to 200 gram of carbohydrates for three days and then bump it to 300 gram for three days, etc.
Another article that ties in with Wilson's finding is...
"Just One Cheat Meal On A Keto Diet Damages Blood Vessels"
Muscular Development/July 2019
Research determined "That just one 75 gram dose of glucose-the equivalent to a large bottle of soda or a plate of fries-while on a high fat/low carbohydrate diet can lead to damaged blood vessels."
My Experience
i tired the Cyclical Ketogenic Diet several times years ago. I wasn't impressed with it then and am even less impressed with it now.