NETA Personal Trainer Practice Exam

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What is one of the primary functions of water in the body?

  1. Storing energy for later use

  2. Regulation of body temperature

  3. Production of hormones

  4. Digesting fats exclusively

The correct answer is: Regulation of body temperature

One of the primary functions of water in the body is its role in the regulation of body temperature. Water helps to maintain homeostasis by allowing the body to dissipate heat. As the body temperature rises due to physical activity or external heat, sweat is produced on the skin's surface. The evaporation of sweat from the skin surface cools the body down, helping to regulate internal temperature. In contrast, storing energy for later use is primarily the function of carbohydrates and fats, while hormones are produced by various glands in the body and are not directly created by water. Digesting fats involves enzymes and bile in the digestive system; while water aids digestion overall, it does not digest fats exclusively by itself. Therefore, the role of water in temperature regulation is crucial for overall health and physical performance.

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