Water

GLP-1s slow gastric emptying, suppress thirst, and shift fluid distribution. Many users notice headaches, constipation, or fatigue that resolve immediately on rehydrating. Tracking water is more important on GLP-1 than off it.

How to log

1. Tap Quick Log → Hydration (or scroll to the Water section on the Log page).
2. Pick a quick-add amount (8 oz, 16 oz, 24 oz, 32 oz, or your custom presets) or enter a specific volume.
3. Save.

Each entry stamps with the current time. Multiple entries per day stack to a daily total.

Setting a target

Profile → Tracking → Water → Daily target.

Defaults to a calculation based on your weight (about 0.5–1 oz per pound, or 30–50 ml per kg of body weight). Override if your doctor or coach has given you a different number.

The target is a guideline. Hitting it isn't pass/fail — it's a reference for "am I drinking less than I usually do?"

How units work

Volume is stored canonically in milliliters. The display unit follows your Profile → App → Units setting:

• Imperial → fluid ounces (with quart / gallon for large totals).
• Metric → milliliters / liters.

You can switch units anytime; existing entries re-render in the new unit.

What the dashboard shows

The Log page shows today's total against your daily target as a progress bar. Tapping the bar shows the breakdown of individual entries by time.

The dashboard's multi-series chart can plot water intake against any other series — useful for finding patterns like "I get headaches on days under 80 oz" or "constipation correlates inversely with water in the past week."

Why this matters specifically on GLP-1

Three mechanisms:

1. Slowed gastric emptying — fluid sits longer, making you feel full sooner. Counterintuitively, this can reduce drinking because you don't feel thirsty.
2. Reduced thirst signal — appetite suppression generalizes; many users report not noticing thirst the way they used to.
3. Constipation — slower transit needs more water to compensate.

The combined effect is that GLP-1 users often drink less than they need without realizing it. Tracking helps catch this before symptoms appear.

Common signs of underhydration on GLP-1

If you have these, check your last 24h of water:

• Headaches, especially morning or late afternoon.
• Fatigue not explained by sleep.
• Constipation worse than usual.
• Dark urine.
• Lightheadedness on standing (orthostatic).

Common questions

"Does coffee count?" Most clinical guidance says yes — caffeinated drinks contribute to hydration; the diuretic effect is mild and offset by the fluid itself. The app counts whatever you log; if you want to track caffeine separately, log it both as water (for hydration) and use a custom symptom or note for caffeine intake.

"Should I log water from food?" No. The target is for fluids you drink. Soup, watermelon, etc. contribute but aren't worth tracking separately.

"Does the simulation use water?" Not directly. The simulation models physiology that's already affected by hydration status implicitly through other inputs. Water is a behavioral / awareness metric.

"What about electrolytes?" Not tracked separately. If you're on a sodium / potassium / magnesium protocol (common on extended fasts or low-carb), use day notes or custom symptoms. Bloodwork captures sodium / potassium values when you have labs.

Privacy

Water data is included in your export and removed on deletion.

Related

• Log a symptom — for tracking headaches, fatigue, etc. against hydration.
• Pattern insights — to surface water-symptom correlations.