What happens when you drink too much water at once?
In rare cases, drinking an extreme amount in a short time can be dangerous. It can cause the level of salt, or sodium, in your blood to drop too low. That's a condition called hyponatremia.It's very serious, and can be fatal. You may hear it called water intoxication.
There are many different opinions on how much water we should be drinking every day. The health authorities commonly recommend eight 8-ounce glasses, which equals about 2 liters, or half a gallon. This is called the 8×8 rule and is very easy to remember.
- In rare cases, drinking an extreme amount in a short time can be dangerous. It can cause the level of salt, or sodium, in your blood to drop too low. That's a condition called hyponatremia.It's very serious, and can be fatal. You may hear it called water intoxication.
- “It depends on your size and weight, and also on your activity level and where you live,” Nessler says. “In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.
- While water intoxication is rare, it can happen if you drink too much water too quickly. Drinking a gallon of water is safe if you spread it out throughout the day, but if you consume it in less than an hour, you risk getting water intoxication, which can be deadly.
At the most, you can absorb about one liter (approx 34 fluid ounces) of water per hour, but only in the most extreme heat and humidity. Most of the time you can only absorb about half or not too much over half that amount, even though it won't fully replace your losses.
- One liter of water is about 33.8 ounces. A typical glass of water holds about 8 ounces. Therefore, a one-liter bottle contains about four 8-ounce glasses of water.
- The “good” of Gatorade. When you exercise, it's important to stay hydrated. However, sports drinks like Gatorade contain sugar and electrolytes like sodium and potassium. Sports drinks can help replace what we lose during longer duration exercise, especially in the heat.
- They found that the water started showing up in the bloodstream within five minutes; half of the water was absorbed in 11-13 minutes; and it was completely absorbed in 75-120 minutes. Here's what the data looks like: On the left, it shows how quickly the water was absorbed in the first hour, measured in the blood.
Updated: 18th October 2018