If you often chug water at night or during meals, your kidneys may not thank you. They prefer steady hydration, small sips spaced throughout the day. This pattern helps flush waste, protect against stones, and preserve sleep quality. Even a simple “2-hour rule” before bed can make a big difference. Your kidneys filter blood continuously. They work best when fluids arrive steadily, not in sudden floods. Consistent hydration helps maintain blood volume and urine flow, supporting waste removal and kidney-stone prevention. Health agencies such as the Centers for Disease Control and Prevention (CDC) and the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) emphasise regular fluid intake throughout the day, adjusted for activity, temperature, and personal health

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