JFC, just eat in moderation and you don't have to do all that crazy crap.
There is a lot of newish science on this not being true. I mean, I heard a podcast yesterday discussing a study where they took three groups of adult men, one group had a common high carb diet, one a high protein diet, and one a high fat diet. All three categories were fed 2000 cal/day. I don't recall how long the study lasted, but the carb ppl actually gained weight, the protein group lost a moderate amt, and the fat diet folks lost something like 4 times as much as the protein ppl.
Cal in/cal out may not be reality.