II.4. The role of water for the human body.

The role of water for the human body

Water is the main component of all tissues and organs.

Tears, saliva and sweat contain water.

The human body is 60-70% water: The part that contains the most water, 99.7% is the ocular vitreous, 75% of the composition of the brain is water, 80% of the composition of blood cells is water, the less water is in the teeth, 2% water.

The daily need for water depends on human mass, effort and climate.

A man can live at least three days without water.

What roles does water play in the body?

Water is a vital element of the human body, which is why proper hydration should not be influenced by the activities you undertake at certain times of the day. Thus, you need to constantly hydrate, as water is important for the body from the following points of view:

• maintains body temperature;

• lubricates the joints;

• protects the spine and soft tissues;

• contributes to ensuring a healthy digestion;

• contributes to the elimination of toxins from the body;

• helps transport oxygen and nutrients to all cells in the body;

• helps maintain normal blood pressure and stabilizes the heartbeat;

• ensures the normal production of saliva;

• moistens the mucous membranes of the lungs and the oral cavity;

• ensures the maintenance of an optimal level of electrolytes in the body.