Without this transport of supplies the body factory would stop. Water also works as the transport for body waste removal. Water is a lubricant. The presence of water in and around body tissues helps defend the body against shock. The brain, eyes and spinal cord are among the body's sensitive structures that depend on a protective water layer.
Water is present in the mucous and salivary juices of our digestive systems.
This is especially important for moving food through the digestive tract. Persons who experience reduced salivary output soon will realize that foods taste differently and are harder to swallow. As a lubricant, water also is helpful for smooth movement of bone joints. Water participates in the body's biochemical reactions. The digestion of protein and carbohydrates to usable and absorbable forms depends on water as part of the chemical reaction.