I used to take a day off and pay for it. Not anymore. What changed my mind was the biochemistry of getting back into ketosis, where I feel fantastic. I used ketostix to record my state of ketosis and found that it takes me about a week and a half to recover from one meal off. Now, my rule says that, if my life requires a non-raw paleo meal, I will eat cooked paleo, but absolutely no grains or gluten, no gravy or dressings, no fruits or starches. So what's left? Perhaps a little too much protein, which may be cooked, and some non-grassfed butter. Better still, I only go out to sushi bars and oyster bars, so if someone wants to be my friend, they know my limits.