To avoid waking up at night to urinate, you should drink your last beverage of the day in small sips rather than swallowing it quickly, because the speed of ingestion influences the urinary response.

noli's read

This advice is based on a physiological understanding of fluid dynamics and renal response. It is accurate that the rapid ingestion of a large volume of water triggers a more pronounced and rapid diuretic response, as it leads to a higher peak in plasma volume, placing greater demand on the kidneys to regulate homeostasis, as observed in various studies on hydration kinetics (type: physiological study). However, the claim that the speed of ingestion alone dictates the urinary response independently of the total volume is a simplification. While drinking slowly may mitigate a sudden peak, the total volume of liquid consumed at the end of the day remains the predominant determining factor for nocturnal urine production (polyuria). Scientific literature confirms that limiting overall fluid intake a few hours before bedtime is a validated strategy for reducing nocturia (type: clinical reviews and urological recommendations). In summary, the advice is an interesting behavioral strategy, but it is secondary to the management of total volume.

the sources

No named source held this one up — that absence is part of the verdict.