Went to the tour briefing few days back, finally, I have got an question of 4 years answered. Why korean serve cool water despite cold weather. She explained, that because our body are warm, it makes the cold water easier absorbed by our body and will not run toilet. Instead drinking warm or hot water will makes you run for toilet.
Another thing to note is the neck, ears and stomach must keep warm to prevent coughing. Once the neck and ears are kept warm, the body will be warm. If not once the neck is exposed to cold it is very difficult to keep the body warm.It is why there is such thing as belly warmer.
