This is a reference post, which I’m creating because I couldn’t find this info for what I was planning on writing today. Given that we dish this advice all the time I thought we must have an FAQ about it on the Message Boards. Alas, we don’t. So instead of writing the information down over and over I’m creating a post to reference each time anyone at Beachbody refers to zig zag dieting. You hear the phase “listen to your body” all the time. Zig zag dieting actually teaches your body how to have a conversation with you.
Not to be confused with yo-yo dieting, zig zag is a technique that should be used any time you want to increase or decrease your daily caloric intake and can be used to find out what your caloric intake should be. Instead of moving straight to a new daily caloric number you move in smaller increments on a staggered schedule. Here’s an example of how it works:
Say, for example, you’re eating 1500 calories a day and have been for a period of time where you’ve lost weight. Now your weight loss has stagnated. This is one of our most common scenarios because the new, fitter you has a different body composition than the former you. You have more muscle and a higher basal metabolic rate (BMR). In order to continue your weight loss you need to eat more because 1500 calories isn’t enough—even though it once was—and now your body is reacting by slowing its metabolism and releasing cortisol in a protective response (often called starvation mode because this is how your body would respond to being starved).
At times this could be a lot more because huge caloric reductions can work in the initial stages of a program for deconditioned people. Let’s say that the individual in question runs a caloric calculation and figures they need 2,500 calories per day.
Weight times 10, plus 10-30% for daily activity depending on how active you are, plus the estimated caloric burn of your exercise, or just go here.
You don’t want to jump straight to 2500 calories. First, it would create some shock to your system and, second, it may be wrong as those calculators only give ballpark figures. The most effective thing to do is to zig zag your caloric intake. In this instance I would recommend eating 2000 calories per day for 3-4 days per week and 1500 calories the other days. Then you note how your body responds, which I would expect to be positively on the higher caloric days and by feeling famished on the low-cal days.
You want to be energized but not hungry, so after a week or two of this I would bump up to around 2200 cals for 4 or 5 days and 1500 cals on 2 days for, maybe one week. If I’m still starving on the low days try bumping them up to 2000 and see how you respond. Use this tactic until you regulate, which means that you’re energized but not hungry and also not full. You can tell when you’re eating too many calories because you’ll begin to feel full, you won’t digest your food between meals, and you’ll feel more lethargic at the beginning of workouts.
Zig zag dieting works whether you need to reduce or increase your caloric intake, and whether you need a subtle change or dramatic change. There is no numbers formula except to increase/decrease in small increments between 200 and 500 calories a day and to zig zag your caloric intake two to four times per week. Then you just listen and let your body tell you how much you should eat.