Its called ckd (cyclic ketogenic diet). Never tried it but it could work if you want burn fat.
Im doing carb cycling and its fantastic, carbs dont build muscle, before i used to to think if you eat alot of carbs you get big well i did got big in the waistline, now i use carbs as a supplement, if you abuse carbs you just get fat as fuck, some people can get away with it, but not me.. The only macronutrient that build muscle is protein, fats and carbs do not contain nitrogen.. Carb cycling is usually 3 low 1 high but i go by the days i workout, off days it 50g carbs, on any bodypart i wan to improve i eat more calories and carbs specially around workouts, and moderate other days.