Maintenance calories, and how to find yours

Maintenance is the intake that keeps you where you are. Every other target is derived from it, and almost nobody knows theirs.

Measure it, do not calculate it

A calculator predicts your expenditure from population averages. Individual expenditure scatters a few hundred calories either side of those averages, driven mostly by how much you move outside deliberate exercise.

The measurement is straightforward:

Log everything for two to three weeks. Change nothing about what you eat.

Weigh most mornings under the same conditions and track the seven-day average.

Read the result. Flat weight means your average intake is your maintenance. Falling by 0.3 kg a week means your maintenance is roughly your intake plus 330 kcal. Rising by the same means intake minus 330.

Three weeks sounds slow. It is faster than six months of arguing with a calculator that was never about you, and it is the same loop described in how to calculate your TDEE, and what it can't say.

It is a band, not a number

Maintenance moves with activity, season, sleep, illness and how much you happen to be walking this month.

Holding it as a band of roughly 200 kcal, with the weekly weight average as the check, is more useful than defending a single figure. "Between 2,300 and 2,500, and I look at the trend on Sunday" is a workable rule; "2,412" is false precision.

Why it is the most important number

It is the anchor for a deficit. Subtracting 20 per cent from a measured maintenance produces a real deficit. Subtracting it from a guessed one produces a guess — how to calculate your calorie deficit properly.

It is the destination when a diet ends. This is the part that gets skipped.

People who finish a fat loss phase without knowing their maintenance return to eating however they ate before. That intake was maintenance at the old bodyweight and is a surplus at the new one, and the weight comes back — not because of metabolic damage, but because nobody established what normal eating looks like at the new size. The transition is the subject of how to stop dieting without gaining it all back.

Finding it after a diet, specifically

Maintenance at the end of a long deficit is lower than it was at the start, for two reasons: you are smaller, and incidental movement has typically fallen.

The practical method is to raise intake gradually — 100 to 150 kcal a week — while watching the trend, until it flattens. That takes a few weeks and it is considerably better than jumping straight to a number from a calculator, which tends to overshoot.

Raising the step count during this period recovers some of the expenditure that fell during the diet, per steps, NEAT, and the calories you burn standing up.

Maintenance is a phase, not a failure

There is a persistent idea that if you are not dieting you are doing nothing.

Time spent at maintenance restores training performance, reduces hunger, lets sleep normalise and makes the next fat loss phase more productive. For most people, several months at maintenance between shorter deficit phases produces a better result over a year than one continuous diet.

It is also the only state that is sustainable indefinitely, which makes it the one worth being good at.

Tracking at maintenance

Most people do not need a daily log to maintain.

The cheaper instrument is the weekly weight average, plus a rough sense of protein, plus a threshold decided in advance: "if my average goes two kilograms above where I finished, I log again for three weeks."

Deciding that threshold now, while calibrated and unemotional, is much easier than deciding it later when the number is already up. This is the step-down described in how long should you track calories before stopping.

When maintenance seems too low

Someone finishing a long diet often finds their maintenance is several hundred calories below what a calculator predicts. That is usually a combination of three things: a smaller body, reduced incidental movement, and a log that reads lower than reality.

The first is permanent and correct. The second is recoverable by walking more. The third is worth auditing before drawing conclusions, using the checklist in nine calorie tracking mistakes that quietly add up.