In very hot and cold weather. Water is lost in the heat through perspiration. In the winter people stay indoors more often with the heat on, which can be very dry. B. Before and after exercising. To keep the body hydrated.
Water is lost through perspiration.
When eating a high fiber diet. When flying on an airplane. A. Drinking water can be inexpensive. B. It is the most replenishing fluid. It is easily accessible.