Where does your body get water from when you stop drinking during a dry fast?

Where does your body get water from when you stop drinking during a dry fast?

From Dry Fasting Club by Dry Fasting Club

April 26, 2026 · 21 min

About this episode

This episode explores how the body generates water from internal sources during a dry fast.

Everyone assumes that if you stop drinking water, your body immediately starts drying out. It doesn't. The second you stop taking in external water, your body flips a switch and starts manufacturing its own — from fat, from glycogen, from stored tissue water that's been trapped in inflammation for years.By Day 3 of a dry fast, your body is producing around 650 mL of pure, deuterium-depleted water every single day — entirely from internal sources.In this video I break down every source:— How fat oxidation produces 420 mL of metabolic water per day (65% of supply)— Why glycogen releases 3–4 grams of bound water for every gram burned— How your kidneys lock down — urine output drops 79%, sodium retention up 87%— The osmotic pull that drains edema, bloat, and organ congestion into usable water— Why ADH (vasopressin) spikes 191% and aldosterone spikes 90% — the water conservation hormones— Why internal metabolic water is higher quality than anything you can drink— The safety math: 650 mL produced vs 740 mL lost = only mild deficit at Day 3This is why dry fasting is safer than it sounds — and why multi-day fasts can sustain themselves far longer than most people realise.🔗 Full…

People in this episode

Host: Dry Fasting Club

Topics covered

  • dry fasting
  • metabolic water
  • body hydration
  • fat oxidation
  • water conservation
  • health

Keywords

  • dry fasting
  • metabolic water
  • fat oxidation
  • hydration
  • health
  • water conservation
  • ADH
  • aldosterone

Mentioned in this episode

Organizations: Dry Fasting Club

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