How Long To Stay in a Calorie Deficit?

9 Jan 2026 · 1 min

Watch on YouTube

1:05

In this concise fitness video, Eric Roberts addresses common confusion about the optimal length of a calorie deficit. He states that the deficit should be maintained only until you achieve your target body fat percentage, meaning the duration depends on how much weight you need to lose—ranging from about 10‑12 weeks for a 10‑pound loss to 6‑18 months for a 50‑pound loss. He emphasizes that consistency matters: the more consistently you stay in a deficit, the shorter the required time. Roberts also debunks the myth that prolonged deficits damage metabolism, urging viewers to disregard such claims. Finally, he invites viewers to a personalized program via a link in his bio, promoting an 8‑week New Year’s transformation challenge.

Chapters

How long should you stay in a calorie deficit? You're going to hear some people tell you, you should only stay in a deficit for 8 weeks, 12 weeks. And then you'll hear some people tell you, it doesn't matter. Just stay in a calorie deficit the entire time. Here's the truth. You stay in a calorie deficit long enough to reach your desired level of body fat. So someone who has 10 pounds to lose, they might only need 10 or 12 weeks. But someone who has 50 pounds to lose, they might need 6, 12, 18 months. And here's the other part. It depends on how consistent you are with your calorie deficit. The more consistent, the less time you'll need to be in one. And the less consistent you are, the longer and more time it's going to take. What's not true is you're going to ruin your metabolism if you stay in a deficit too long. Anybody who's telling you that, go to their profile, block them immediately. And if you want some more personalized help with your calorie deficit, click the link in my bio. I'm running an 8-week New Year's transformation Challenge.