Most people don't quit tracking because it stopped working. They quit because it became a second job — a kitchen scale, a barcode scanner, a database with four contradictory entries for "chicken breast", and a decision to make about every single thing they eat.
The good news is that the precision was never the point. You need to be accurate enough to make a decision, and that bar is far lower than the one a food scale sets.
Why "accurate enough" is genuinely enough
Every calorie number you have ever seen is an estimate. Packaged food labels are permitted a tolerance that runs to around 20% in most jurisdictions. Databases disagree with each other for the same food. The calorie content of a chicken breast depends on how it was cooked and how much of the oil stayed in the pan.
So the choice isn't between precision and estimation. It's between one estimate and another. A weighed entry against a generic database row might be 10% off; a well-judged eyeball estimate might be 20% off. Neither is the truth, and — this is the part that matters — the difference between them almost never changes what you should do next.
What changes your decisions is the trend across a week. A consistent 15% error doesn't hide a trend; it just shifts the whole line slightly. And a method you'll still be using in six months beats a precise one you abandon in three weeks.
Your hand is a calibrated measuring device
It's attached to you, it scales roughly with your body size, and it's always there.
- Protein — one palm. Palm-sized and palm-thick: a chicken breast, a salmon fillet, a lean steak. Roughly 100–150 g cooked, around 25–30 g of protein.
- Carbs — one cupped hand. Cooked rice, pasta, potatoes, oats. Roughly 30–40 g of carbohydrate.
- Fats — one thumb. Oil, butter, nut butter, cheese. Roughly 10–12 g of fat, or around 100 calories.
- Vegetables — one fist. Basically free. Have two.
A plate built as one palm, one to two cupped hands, one to two thumbs and a fist or two of vegetables lands most people between 500 and 700 calories without a single number being typed.
The three things actually worth measuring
If precision has to go somewhere, put it here — these are the items where eyeballing goes wrong by enough to matter.
- Cooking oil. The single largest invisible cost in home cooking. A "drizzle" is frequently three tablespoons — around 350 calories. Measure it with a spoon, or use a spray, or pour it and accept that you must count it.
- Nuts, nut butters and cheese. Calorie-dense enough that a portion twice as big as you intended costs 200 calories and looks identical.
- Drinks with calories. Juice, lattes, alcohol, soft drinks. Easy to forget entirely, and a large flat white plus two glasses of wine is a third of many people's deficit.
Everything else — vegetables, lean protein, fruit, most home-cooked meals — can be estimated with a hand and you will still be inside the range that matters.
Consistent beats accurate
If you always estimate your rice a little low, your logged intake will be a little low every day — and your weekly trend will still be perfectly readable, because the error is constant. What ruins a trend is inconsistency: weighing on weekdays, guessing on weekends, and not logging the days that went badly. Pick one method and use it on your worst days too.
The restaurant problem
You have no scale, no label and no idea what was in the sauce. Some rules of thumb that hold up well:
- Assume more fat than you think. Restaurant food is cooked in more butter and oil than home food. Add 20–30% to whatever you'd have estimated at home.
- Judge by the components. A palm of protein, a cupped hand of carbs, and count the visible fat sources. It's a plate, and plates follow the same rules everywhere.
- Pick the number and move on. An estimate you log is worth vastly more than a perfect number you don't. The worst outcome is an untracked day, because that's a hole in the trend rather than a small error in it.
Where this gets easy
Every method above still asks you to translate food into numbers yourself. That translation is the actual work, and it's the step where most people give up.
It's also the step a coach can do for you. Sophia takes the sentence — "chicken salad, a coffee and a slice of toast" — and does the estimating: the portions, the oil, the numbers, all of it. If she's unsure how big something was, she asks, and if she got it wrong, you tell her in the same breath: "that was more like 200 g." She corrects it and moves on. No scale, no barcodes, no database with four entries for chicken.
Which puts the effort where it belongs — on eating well, most days — and leaves the arithmetic to something that doesn't mind doing it.