Every successful fat-loss approach — keto, intermittent fasting, high protein, you name it — works for one underlying reason: it puts you in a calorie deficit. Understanding how to set one up properly is the single most useful thing you can learn about losing weight. Here's how.
What Is a Calorie Deficit?
A calorie deficit means eating fewer calories than your body burns. When you do this consistently, your body makes up the energy gap by burning stored fat — and you lose weight. It really is that simple at the core.
How to Set Up Your Deficit
- Estimate your maintenance calories — the amount that keeps your weight stable (online calculators give a rough starting point based on your age, size, sex and activity)
- Subtract a moderate amount — a deficit of around 300–500 calories a day is sustainable for most people
- Prioritise protein — keep it high to preserve muscle and stay full
- Track your progress — adjust based on the scale over 2–3 weeks, not day to day
How Big Should Your Deficit Be?
Bigger isn't better. A moderate deficit:
- Is sustainable — you can actually stick to it
- Preserves muscle — extreme deficits burn muscle along with fat
- Avoids burnout — crash diets almost always rebound
Aim for steady fat loss of a rate that is safe and sustainable for you.
The Hardest Part — and the Fix
The challenge isn't understanding the deficit; it's staying in it day after day when you're hungry, busy and tired. This is where pre-portioned meals are a genuine cheat code. Our Lean range (400–550 calories, 30g+ protein) keeps you in a controlled deficit automatically — high protein keeps you full, and the portions are done for you, so you stay on track without counting.
Frequently Asked Questions
How big should my calorie deficit be?
A moderate 300–500 calorie daily deficit suits most people and supports steady, sustainable fat loss.
Why am I not losing weight in a deficit?
Common reasons: underestimating portions, "hidden" calories (drinks, oils, snacks), or water-weight fluctuations masking real fat loss. Pre-portioned meals remove the guesswork.
Will I lose muscle in a deficit?
Not if you keep protein high and stay active — that's what preserves muscle.
Can meal delivery keep me in a deficit?
Yes — calorie-controlled meals make staying in your deficit far easier, since the portions are already set.
Stay in Your Deficit the Easy Way
Let calorie-controlled meals do the hard part. Build your plan today.
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General information only, not personalised dietary advice.
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