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Why is it when I drink a glass of liquid I urinate at least twice as much back out?

Mark Sterling
Mark Sterling
Research Editor · Apr 10, 2026 · Updated Apr 13, 2026

Your bladder only sends the "time to pee" message to your brain when it reaches a certain level of fullness. So the amount you pee out doesn't just represent the glass of water you just drank, but all of the water you have drank since the last time you peed plus the water your body needed to diss…

71
Words

1 min
Read Time

#218
of 500 in Science

-1%
vs Category Avg

The Short Answer

Your bladder only sends the "time to pee" message to your brain when it reaches a certain level of fullness. So the amount you pee out doesn't just represent the glass of water you just drank, but all of the water you have drank since the last time you peed plus the water your body needed to dissolve the waste products it excretes in urine (urea, creatine and some other compounds).

Analysis

Key Concepts: Water, time, drank

This explanation focuses on water, time, drank and spans 71 words across 2 sentences. The depth is typical for Science questions (category average: 72 words), striking a balance between accessibility and completeness.

What This Answer Covers

This is a focused, single-point answer that gets directly to the core of the question without detours.

How This Compares in Science

Ranked #218 of 500 Science questions by answer depth (top 44%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.

Frequently Asked Questions

Is there a simple explanation for why it when i drink a glass of liquid i urinate at least twice as much back out?

Your bladder only sends the "time to pee" message to your brain when it reaches a certain level of fullness. So the amount you pee out doesn't just represent the glass of water you just drank, but all of the water you have drank since the last time…

How detailed is this explanation compared to similar Science questions?

This is an above-average answer at 71 words, ranked #218 of 500 Science questions by depth. The key concepts covered are water, time, drank.

What approach does this answer take to explain it when i drink a glass of liquid i urinate at least twice a?

The explanation uses contrasting perspectives across 71 words. It is categorized under Science and addresses the question through 1 analytical lens.