what is it called when you are too hydrated
Prevent overhydration by drinking only when you are thirsty. If you play sports, you know an athlete's mantra is hydrate, hydrate, hydrate. While dehydration is common, overhydration can cause a rare, but sometimes fatal, condition called hyponatremia. When you drink a lot of water, the ratio of sodium and fluid in your body becomes skewed. The imbalance causes cells to swell.