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Log water as you drink it

3 min read 2 tools Updated May 12, 2026

— Say it like this
Just had a 500 ml bottle.
2 more ways to say it
  • 500 ml.
  • Add a glass of water.
— Here's how it goes

What you'd see in chat

  1. Just had a 500 ml bottle.
  2. Logged 500 ml — you're at 1.5 L of 2.5 L for the day. Another 1 L to go. Bottle on the desk?
  3. Hydration

    2026-05-12

    1500

    ml logged

    2500

    ml goal

    1000

    ml left

    • 250 ml 08:20
    • 500 ml 10:55
    • 250 ml 12:40
    • 500 ml 14:35

You finish a bottle, set it down, and want to log it before you forget. No menus, no slider — just the number or the container name.

What the agent needs to hear

Behind your sentence, the agent works backwards to two pieces: how much and when. Volume is the only piece you usually have to provide; time defaults to now and date defaults to today. « 500 ml » lands cleanly. « A glass » or « a bottle » uses sensible defaults — a glass is 250 ml, a bottle 500 ml — or whatever you’ve set in your profile.

The agent shows you a card with the entry and your running daily total, and waits for a nod. Most of the time you skim and move on; the whole interaction is two or three seconds.

Volumes, units, and containers

Numbers always override defaults. « 750 ml » sticks as 750. Imperial works too if your default is set or if you name it: « 16 oz » converts and stores cleanly. The agent doesn’t argue about precision — water rarely needs to be exact, so « about a liter » or « roughly half a bottle » resolves to a round-number default and saves.

If you drink the same container all day (a 750 ml bottle you keep refilling), naming it once and counting refills is faster than typing the volume each time: « another bottle » repeats the previous container. Three « another bottles » is 2,250 ml in three lines.

What this signal is for

Hydration logs feed your daily hydration total, the running counter in your day card, and weekly hydration trends. If you have a target set (most people do, or one gets inferred from body weight), the running total reads against the target so you know whether to drink more before bed.

Water is treated separately from meal logs — it’s not a meal entry, doesn’t count toward caloric intake, and doesn’t fight with your macros. It has its own card row, its own daily target, and its own weekly summary. That separation is why « log a glass of water » works the same whether you’re on a diet plan or not.

When the agent gets it wrong

The card is the moment to catch a wrong volume. If you said « a bottle » meaning your 1 L bottle but the agent defaulted to 500 ml, name the size: « it was a 1 L bottle, not the small one ». If the volume got logged in the wrong unit (rare, but possible if you switch between systems mid-day), say so: « that was 16 oz, not 16 ml ».

If the agent treated your sentence as a meal entry — say you said « drank a smoothie, 400 ml » and it logged as a meal instead of water — push back: « that’s water, not a meal ». The entry moves to the right column.

What makes the log worth keeping

Three things decide whether this hydration log helps you later: the volume is the actual amount you drank (not a guess, not a rounded-up brag), the date and time match when you drank it (not a midnight catch-up that flattens the day’s curve), and the water stays in the water column, not in meals. The system uses these for daily hydration targets, weekly hydration trends, and your daily progress card; mis-logging drinks as meals quietly corrupts your meal totals too. Say the volume, glance at the running total, drink more if you’re behind.

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