ELI5: Explain Like I'm 5

Water intoxication

Water intoxication happens when you drink too much water in a short amount of time. That means your body has more water than it needs, so it ends up diluting the salt and other important minerals in your body that your cells need to function. This causes your cells to not work properly, which can make you feel sick and weak. It can even be dangerous if it gets really bad, so it's important to not drink too much water at once.