What nutrient is essential for muscle repair and growth?

• A. Carbohydrates
• B. Fats
• C. Protein
• D. Fiber

Answer: (C)

Protein is essential for muscle repair and growth because it provides the building blocks needed for muscle synthesis. When we engage in physical activities, particularly strength training or endurance exercises, muscle fibers experience micro-tears. In order for the body to repair these tears and build new muscle tissues, amino acids—derived from proteins—are necessary.

Proteins serve as a vital component of the muscle structure itself, and they play a significant role in the recovery process after physical exertion. Amino acids from dietary protein sources help to stimulate muscle protein synthesis, leading to increased muscle mass and enhanced recovery.

In contrast, carbohydrates primarily serve as an energy source during workouts, while fats provide essential fatty acids and long-term energy storage. Fiber, though important for digestive health, does not contribute directly to muscle repair or growth. Thus, while all these nutrients are important for overall health and performance, protein is the critical nutrient specifically required for muscle repair and growth.