You added three sessions a week, or started cycling to work, and your Expenditure screen looks exactly the same. Nothing is broken. The number is built to ignore the first few days of anything.
Why it waits
The estimate never reacts to a day. It reads two windows: your average intake across the 21 complete days ending yesterday, and the slope of your trend weight over roughly the same period. A new habit has to fill enough of those windows to change their averages before it can change anything.
Then there is a second brake. Each day the estimate moves only part of the way toward what the evidence says — a step that is largest when the estimate is young and shrinks as your history grows. That is what stops one heavy week from rewriting your targets, and it is also what makes a real change arrive as a drift rather than a jump.
Two to three weeks is the honest expectation.
What makes it slower still
The step gets scaled back when the data underneath it is thin:
- fewer than three weigh-ins in the last seven days — the weight slope is the noisier half of the equation, so the algorithm leans on it less until the scale catches up;
- fewer than fourteen logged days inside the three-week window — a thinly logged period cannot be allowed to yank the estimate around.
Both are worth fixing during exactly the weeks you want the number to respond.
If three weeks pass and nothing moves
Work down this list before concluding the estimate is wrong:
- Check the Accuracy chip. If it says Paused, the estimate is holding a value rather than updating, and why your expenditure is paused names the condition and the fix.
- Check whether your intake rose with your training. If you are eating more to fuel the work and your weight is flat, your expenditure has risen — the evidence is in the intake side, not the scale. Look at the number, not at your weight.
- Check for gaps in the diary. Training weeks are when snacks go unlogged. Unlogged food reads as food you never ate, which pushes the estimate down — it can cancel out a real rise and leave you looking at a flat line.
There is no manual override, on purpose
You cannot type your expenditure in and make it stick. Setup is the one moment you get to state a number; after your first seven complete logged days, the estimate is measured rather than declared, and a value you typed in would be a guess overwriting evidence. If the number looks wrong, the lever is the data: log completely, weigh in a few times a week, and give it the three weeks.