Drinking water before meals helps increase satiety, while during and after meals it supports digestion, maintains bowel movements, and aids nutrient absorption.

During intense heat, I am constantly thirsty and drink continuously. Can drinking too much water be harmful, and how much water is sufficient daily? (Hung, 35, Hanoi)

Drinking cold water helps cool the body and rehydrate faster after exercise, but some people may experience digestive discomfort or headaches when using it regularly.

Thirst is a late sign of dehydration, which can lead to fatigue and digestive dysfunction if prolonged.

"I often drink several glasses of water to quench my thirst in hot weather, but afterwards I feel tired and my heart races. Does consuming a large amount of water at once impact cardiovascular health?" asks Hong Xuan from TP HCM.

A female tourist requested tap water during her meal after not purchasing other beverages, but staff provided a bottle of mineral water priced at 7 euro instead, leading to a protracted legal battle.