Getting into the water can make it seem like your period goes away

First, let it be known that water itself will never make your period disappear. “It doesn’t matter if you’re in water or on the top of a mountain or in a ditch, your period still comes,” says Michele Haughton, MD, an ob/gyn at Weill Cornell Medicine and NewYork-Presbyterian.

But getting into the water can make it seem like your period goes away. That's all thanks to the pressure of the water surrounding, it can counteract the force of gravity that helps blood flow out of your body. There’s no biological magic going on here, it’s all physics. “When you’re in water there’s some opposite pressure happening,” says Dr. Haughton.

And, while we're on the subject of periods in water, there’s absolutely no chance that this tiny amount of menstrual blood will attract every shark in the ocean (or even just one of them), so let’s put that myth to rest right now. “Whenever I hear the shark myth I think, ‘How much do you people think you’re bleeding?’ It’s not like you’re waving around a bloody arm,” says Dr. Haughton.

Even if your period tends to be light, tampons and menstrual cups can save you when you exit the water. “The second you come out of the water your period will start flowing again,” says Dr. Haughton. “And then you’ll have a nice stain on your bathing suit.”

Link to story: https://bikininewsdaily.com/bnd/Gettingintothewatercanma-270