Think about the habits we hype. Cold plunges. Twenty-page morning journals. A new protein powder every fortnight. We give them podcasts, supplement stacks, and sub-Reddits. Meanwhile, the most ordinary upgrade — a glass of water at 10 a.m. — sits in the corner of the kitchen, ignored, faintly insulted by the espresso machine.
There's a reason for that. Water is unsexy. It doesn't promise a transformation. It doesn't come with a tier list. You drink it, nothing visible happens, and you go back to whatever you were doing. The reward isn't a spike; it's an absence — the headache that never arrived, the afternoon slump that didn't, the workout that felt a little less like wading through sand.
What the body quietly tracks
A one-percent drop in body water — well within an ordinary day's variability — starts to nudge cognition, mood, and physical performance. By two percent, most people notice. Concentration thins. Reaction time slows. You become marginally worse at the things you care about, in ways that are very hard to attribute to dehydration after the fact.
The hard part isn't biology. It's bookkeeping. Thirst is a lagging indicator: by the time you feel it, you're already a few hundred millilitres behind. Coffee, tea, soup, fruit, and sparkling water all count toward your total — but only if you're keeping a running total in the first place. Most days, we're not. (More on the actual number in How much water do you really need?.)
Hydration is not a willpower problem. It's a noticing problem.
Why most hydration apps make it worse
Open a typical hydration app and you're greeted by an account flow, a pricing tier, an ad for a $19.99 reusable bottle, and a permission prompt for your contacts. That's the genre's original sin: turning a calm, ten-second habit into a small business transaction. By the time you've dismissed the third upsell, you've forgotten what you opened the app for.
The opposite failure mode is the minimalist void — a single number on a beige background, three taps to log a glass, a typed number for the amount. You delete it inside a week and feel a bit relieved.
Drimin sits in the rare middle. One tap on a floating button logs a sip. Long-press
the launcher icon and you get +250 ml, +500 ml,
or a jump straight to stats. Add the home-screen widget and a glance is enough.
That deliberate restraint is the subject of a separate essay,
Designing for stillness.
Three habits that actually move the needle
After watching dozens of people try to drink more water — and after a dozen iterations of Drimin on our own days — a few patterns hold up.
1. Anchor the first glass to something you already do.
Put a full glass next to your coffee machine, your toothbrush, or your laptop charger. The habit isn't "drink more water"; it's "drink a glass before I drink anything else." Anchoring removes the decision. By the time you've poured the first one, you're 250 ml ahead.
2. Pre-commit your cup size.
People who log water in tiny variable sips almost always undercount. People who decide once — "my mug is 350 ml, my bottle is 750 ml" — and log in those units almost always trend toward their goal. Pick a cup. Tell the app. Log it whole.
3. Make the feedback inhumanly satisfying.
Numbers don't motivate; signals do. A wave that rises a little, a streak that ticks forward, a notification that quietly stops the moment you've made your goal. We are not strictly rational animals; we're animals that like to see the bar fill.
What "enough" actually means
The "eight glasses a day" rule is a rhetorical convenience, not a medical prescription. Actual needs vary with body weight, climate, activity, what you ate, what you're avoiding, and whether you slept. A useful default for most adults is between 2 and 3 litres of total daily fluids, with the upper end if you exercise or live somewhere hot. (We unpack the popular myths in Eight hydration myths, politely debunked.)
Drimin lets you pick anywhere from 500 ml to 6 L. The range is deliberate — and a gentle hint that this number is a personal one. If you're unsure where to start, 2 to 2.5 L is a reasonable, undramatic guess for an ordinary day.
And — because we have to say it once, plainly — Drimin is not medical advice. It is a helpful nudge. If your hydration is bound up with a medical condition, please talk to someone qualified.
The boring upgrade
We tend to look for big levers because they feel proportionate to the size of our ambitions. But the body is a quiet, patient machine. It will give back most of what it asks for if you give it most of what it needs, most days.
Drink the glass. Tap the orb. Keep going. The compounding is real, even if no one notices but you.
This essay is informational. It is not medical advice and is not a substitute for consultation with a qualified healthcare professional.