Weight management is about trends, not specific events. It’s about what I do most days, not every day. And by most days I don’t mean 4 out of 7, I mean 6 or 7 out of 7. So if I have 6 great weight management days and the 7th is a bit out of control, I’m still probably ok. Of course, I can’t just go crazy and eat whatever I want one day a week, because over the course of a month I can do significant damage that way. Days to weeks, weeks to months, months to years. It’s all about trends.
Similarly, starving myself by eating 300 calories on one day then spending the rest of the week eating whatever I want won’t produce the results I would like to see. It will, however, slightly limit the damage I would do if my other option was to eat whatever I wanted 7 days a week. Over the course of a month, 4 days at low calories will slightly offset the damage I’d be otherwise doing. Some weeks, just limiting the damage is a win. Some weeks, even a single day off the plan is a loss.
It’s all about trends, and those trends arc across any time period I can track. Sometimes my mind is unkind to me and I start to berate myself for my failure after a particularly rich meal, where I know I have significantly overshot my daily BMR calorie limit. Then I remind myself that one rich meal in a week of good planning and weight management is not a failure, my trends are still good.