As said each to their own, I come from a weightlifting background which has always used the concept of cheat days, and when I was looking into Ketogenic diets the best one for me to keep muscle mass whilst losing weight seemed to be the
Cyclical Ketogenic Diet which involves carbing up each week......... so basically I merged a cheat day with the carbing up in the
Cyclical Ketogenic Diet , but I have a few extra carbs every sat , but only " cheat" once a month....
Another concept I take from my lifting is, "whatever works for you", as we are all different............
But its worth googling "cheat days" , as they are supposed to be beneficial long term...........