We've been told  for decades that we’re supposed to drink eight glasses of water each day to stay healthy and hydrated. When I was pregnant, I drank so much water that I felt like I was drowning in it by the end of each day.

Water is super important for pregnant women to drink, so please don't take this new research as an excuse to not consume enough water if you're expecting, but for the rest of the world, I came across a study that says the whole idea that we must drink eight glasses of water is each day is actually complete nonsense.

In a Harvard Health Letter update, researchers shared the discovery that the amount of water we need varies from day to day and situation to situation.

For instance, on days when you've been working out or it's super hot and you've been sweating like nobody's business, you really should drink more water. On days when you're eating foods that are packed in water such as watermelon or soup, you really we don't need as much water.

And you know what? You're not just limited to plain water.

"It's really about fluids in general. Doesn't necessarily have to be water," Dr. Sharmeela Saha, director of the dialysis center at University Hospitals Case Medical Center in Cleveland, told CBS News.

So how are we supposed to calculate the best we can how much water our body needs on any given day? Well, experts say when we're thirsty, drink until you're not thirsty anymore. Imagine that!

[via CBS News/What To Expect]