You would have to try harder to drink
too little water, because your body regulates hydration by getting thirsty, under normal conditions. Overhydration can lead to significant consequences such as heart failure and urinary tract abnormalities. Excess water consumption can cause hyponatremia, which is an independent risk factor for bone fractures.
"Staying hydrated" means to match the body's needs, not more, not less. Like with all other silly hypes (antioxidants, electrolytes, vitamin supplements, etc. etc.), too much is potentially harmful. It is a hype, because it's so easy to say "stay hydrated" and it seems like an uncontroversial thing, but it can be just as harmful as dehydration. In fact, among e.g. long distance runners, severe complications from overhydration are more common than severe complications from dehydration.
https://pubmed.ncbi.nlm.nih.gov/27548748/
"Staying hydrated" means to match the body's needs, not more, not less. Like with all other silly hypes (antioxidants, electrolytes, vitamin supplements, etc. etc.), too much is potentially harmful. It is a hype, because it's so easy to say "stay hydrated" and it seems like an uncontroversial thing, but it can be just as harmful as dehydration. In fact, among e.g. long distance runners, severe complications from overhydration are more common than severe complications from dehydration.
https://pubmed.ncbi.nlm.nih.gov/27548748/