Take a day off from what? From your health? From delicious, real food? So you can do what? Make yourself sick? Eat artificial chemical food-lab crap? I just don't get that kind of thinking. I can see having a piece of cake and ice cream at a party once in a while, but planning to eat crap 20% of the time makes no sense. Even less sense is the "time off" part, as if eating great food is a prison sentence.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Highest squat: 167.5 x 2. Current Deadlift: 190 x 3