Your body is a master at absorbing water, but it has limits. According to gastroenterologists, drinking more than about one liter per hour can overwhelm your intestines’ ability to process it. That excess water doesn’t just sit there; it acts like a rinse cycle, flushing out partially digested food and electrolytes.
This isn’t technically “diarrhea” in the infectious sense—it’s more like osmotic diarrhea. The water pulls into your bowel by simple physics, creating a watery mess that makes you sprint to the bathroom. Think of it as your body’s polite way of saying, “I’m full, thanks.”
Here’s a fun fact: your small intestine can only absorb about 800 to 1,000 milliliters of fluid per hour. That’s roughly four cups of coffee worth. Exceed that, and you’re essentially rerouting your hydration straight to the plumbing.
