You set your TDEE at 240 pounds, lost 25, and the losses have slowed to almost nothing. You have not changed anything — which is exactly the problem.
Your TDEE fell with you. A smaller body costs less to run: less tissue to maintain, less mass to move around. That is not a metabolic malfunction, it is physics, and it is entirely expected.
How much it changes
A useful rule of thumb is that TDEE drops by roughly 10–15 calories per pound lost for most people.
Lose 25 pounds and your daily burn may be 250–375 calories lower than when you started. If your target has not moved, your 500-calorie deficit is now closer to 150. You are still losing — about a third as fast as before, which reads as a plateau and feels like failure.
Lose 50 pounds without ever recalculating and your deficit may be gone entirely. You would be eating at maintenance while doing everything you were told.
When to recalculate
- Every 10–15 pounds lost. The main trigger. Update your weight and let the target follow you down.
- When losses stall for 3+ weeks despite consistent logging. Check your weight in the app first — a stale number is the most common cause of a fake plateau.
- On your birthday. Age is in the formula. It is a small annual adjustment and easy to remember.
- After a significant break. Coming back from a long pause or a regain, start from where you are rather than where you left off.
In the app, this is Update TDEE on the dashboard — same short form, new weight, new number.
Recalculating is not the same as cutting harder
Important distinction. Updating your TDEE keeps your deficit the same size — it does not make you eat progressively less on top of an already-shrinking target.
If your TDEE dropped from 2,600 to 2,300, your 500-calorie deficit means moving from 2,100 to 1,800. You are eating less because you are smaller, not because you are punishing yourself.
And there is a floor. If recalculating pushes your target below roughly 1,200 (women) or 1,500 (men), do not go there. Use a smaller deficit and accept slower loss, or talk to a doctor or dietitian about your plan. Sustainable and slow beats aggressive and abandoned.
Other reasons the losses slowed
A stale TDEE is the most common cause, but not the only one:
- Portion drift. Estimates get generous over time. A weekend of extra-careful logging often reveals a few hundred quietly reappeared calories.
- Water masking fat loss. New training, high sodium, or hormonal cycles can hide several weeks of real progress. Compare monthly averages before concluding anything.
- Adaptive changes. In a sustained deficit, people often move slightly less without noticing — fewer spontaneous walks, more sitting. Deliberate daily movement counteracts most of it.
- Genuinely reaching a good weight. Losses slow near a healthy body composition. That is not a problem to solve.
A simple maintenance rhythm
- Weigh yourself under consistent conditions and watch weekly averages.
- Every 10–15 pounds, open Update TDEE and enter your new weight.
- Keep the same deficit size — do not compound it.
- If three weeks stall with an up-to-date TDEE, audit your logging before cutting further.
The bottom line
Your TDEE is a snapshot of the body you had when you calculated it. As that body changes, the number has to change with it — otherwise your deficit erodes silently and you blame yourself for arithmetic.
Update every 10–15 pounds. It takes thirty seconds and prevents most of the plateaus people quit over.
This article is general information, not medical advice. If weight loss stalls persistently despite consistent tracking, talk to your doctor — thyroid conditions and certain medications can affect weight regulation.
