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Sodium is an electrolyte. Electrolytes are substances that when dissolved in a liquid conducting an electrical charge, which may be positive or negative. When an electrolyte combined with otherpositively charged negatively charged form salts. Sodium chloride or table salt, sodium is the combination of which is positively charged, with chlorine, which is negatively charged.

Sodium hasessential functions in the body:
1. It is the main electrolyte in extracellular fluid (i.e., liquid that is outside the cell: in the plasma and around the cells), so it is involved in the maintenance offluid balance and to control pressure Blood.

2. Together with other electrolytes, is involved in the transmission of nerve impulses and muscle contraction.

3. It is part of several compounds, suchas sodium bicarbonate, which helps maintain the acid-base balance.

Sodium is found mostly in table salt and processed foods such as sausages, canned food, pickles, also found in cheese, milk, bread,soy sauce, among others.

SODIUM AND SPORTS DRINKS
although people concerned about the sodium content of a sports drink, it is actually an essential component to achieve adequate rehydration.Sodium fulfills important functions within a sports drink because:

1. Helps replenish sweat losses: Sodium is the main electrolyte lost in sweat and is indispensable for achieving recover adequaterehydration.

2. Keeps the desire to drink: Lack of sodium can "turn off" the thirst mechanism before the body is fully rehydrated. In studies with different types of people who exercise (athletes,children, industrial workers) have shown that when people drink more and drink tastes sodio.1-5 Sodium stimulates thirst and this helps us to recover the liquids lost.

3. Helps maintain fluid withinthe body: The main function of a sports drink is to rehydrate quickly. However, to achieve adequate rehydration and restore fluid balance in the body, it is important to recover both liquids and...