Question: what happens if you drink more than 2 litres of water a day?
Answer: Keep in mind that excessive water intake can be dangerous. Drinking too much can disrupt your body's electrolyte balance, leading to hyponatremia, or low levels of sodium in your blood ( 21 ). Symptoms of hyponatremia include weakness, confusion, nausea, vomiting, and — in severe cases — even death ( 22 ).