Which of the following is a function of amino acids in the body?

• A. Generating energy from carbohydrates
• B. Stimulating digestion
• C. Building and repairing muscles
• D. Regulating body temperature

Answer: (C)

Amino acids play a crucial role in building and repairing muscles, which is why this answer is correct. They are the building blocks of proteins, and proteins are fundamental components of muscle tissue. When the body engages in physical activities, especially strength training, muscle fibers undergo stress and small tears occur. Amino acids aid in the repair of these fibers, helping muscles recover and grow stronger over time. This process is essential for muscle hypertrophy and overall physical health.

While generating energy is important for the body, this primarily involves carbohydrates and fats; amino acids can be converted into energy, but this is not their primary function. Similarly, stimulating digestion is primarily the role of enzymes and other digestive substances rather than amino acids directly. Regulating body temperature involves mechanisms such as perspiration and blood flow, which are not directly influenced by amino acids. Thus, building and repairing muscles stands out as the primary function associated with amino acids in the body.