How Long To Stay in a Calorie Deficit ⏰

12 May 2026 · 1 min

Watch on YouTube

1:20

In this concise video segment, Eric Roberts debunks the common claim that a calorie deficit should be limited to 12 weeks to avoid slowing metabolism. He uses a 20‑pound backpack analogy to illustrate that metabolism adjusts to the current body weight, not the duration of dieting. Whether you take intermittent “breaks” (removing the backpack gradually) or stay in a continuous deficit (removing it all at once), the end metabolic state will be the same once you reach your target weight. The choice to incorporate mental breaks is presented as a personal preference rather than a physiological necessity. The core message is that you remain in a calorie deficit until you achieve your goal weight, and the length of time is dictated by that goal, not an arbitrary weekly limit.

Chapters

How long should you be in a calorie deficit? You'll hear some people say, you should only be in a calorie deficit for 12 weeks, otherwise you'll slow down your metabolism. But that doesn't make any sense because think of your metabolism like wearing a 20-pound backpack. When you're wearing the backpack, your body has to work harder because you're carrying around an extra 20 pounds. But when you take the backpack off, your body doesn't have to work as hard because you're carrying around 20 less pounds. Whether you take the entire backpack off all at once or whether you slowly pull things out of it, when the 20 pounds is gone, you'll be in the same place. So whether you take breaks along your calorie deficit or if you just keep going straight until you reach your goal weight, Your metabolism will end up in the same spot. It's just one will take you longer and you'll have more breaks, and the other one you won't and it'll take shorter. So if you want to mentally take breaks along the way, that's up to you, but you don't have to. You're in a calorie deficit until you reach your goal weight. It's really that simple.