Here are some reasons as to why you should avoid drinking chilled water:
Especially during summer most suffer from dehydration and over that just imagine your heart rate decreasing. Yes, chilled water decreases heart rate. So better stay away from chilled water.
Drinking chilled water speaks on your digestive system. It reduces the capacity of digestion.
It is understood that the summer heat drives us towards the cold water but drinking cold water before and after the meal will increase mucus in the respiratory track and it leads to many inflammatory infections. So avoid drinking cold water.