The Journey 🫃
Build a meal, add what you had with it, and watch how long it actually takes to get through you. Every stage is calculated from what is on the plate — fat is the strongest brake there is, and fibre pulls in two directions at once.
- 1Pick a meal below — or tap ingredients to build your own.
- 2Add what you had with it. Each one tells you what it really changes.
- 3Everything updates instantly. Compare every meal against the same everyday reference.
🍽️ Build your meal
Start from a real meal, then swap anything you like. Set how much of each you had — a second helping of rice and a second helping of butter do very different things. Up to eight ingredients.
➕ Add or swap ingredients
🥤 …and with it?
This is where most of the interesting answers are. Each one says what it genuinely does — including the ones that do nothing.
💧 Wait, really? Myth busted
Water with a meal does not dilute your stomach acid into uselessness. Your stomach monitors its own acidity constantly and simply secretes more acid if it needs to — it is a self-correcting system, not a fixed pot of liquid you can water down. A glass of water also passes through in about twenty minutes, long before most of the digesting happens. If you eat much fibre, drinking with meals actively helps: fibre needs water to do its job.
Questions people actually ask
Does drinking water with a meal dilute your stomach acid?
No. The stomach continuously regulates its own acidity, and a glass of water passes through in minutes. Water with a meal does not meaningfully impair digestion, and for anyone eating fibre it generally helps.
How long does food stay in the stomach?
Roughly one to four hours depending mostly on fat content. Liquids leave in minutes, a light carbohydrate meal in one to two hours, and a fatty meal can take three to four. The whole journey from mouth to exit usually takes one to three days.
Where does intestinal gas come from?
Mostly from bacteria in the large intestine fermenting fibre and fermentable carbohydrates that the small intestine could not absorb. It is a sign the system is working normally, not failing.
Does chewing more actually help?
Yes, modestly. Chewing is mechanical breakdown plus the first enzyme (salivary amylase, which starts on starch), and it is the only part of digestion you consciously control. It will not transform your health, but larger pieces do take the stomach longer.
Sources & references 📚
The stage timings and mechanisms on this page come from these. Digestion physiology is well established — where a range is wide, that reflects real variation between people rather than uncertainty in the source.
- NIDDK (US National Institutes of Health) — Your Digestive System & How It Works — the stage-by-stage anatomy and the role of bile, enzymes and gut bacteria
- Monash University — About FODMAPs and IBS — why fermentable carbohydrates reach the large intestine intact and produce gas
- NHS — Irritable bowel syndrome — when ordinary bloating and gas stop being ordinary
Want to know what happens when two foods meet before they get here? Try the Mix Lab → Or if something you ate is bothering you, decode the pattern →