What type of nutrient primarily provides energy for physical activity?

Carbohydrates are primarily responsible for providing energy for physical activity. When consumed, carbohydrates are broken down into glucose, which serves as a key source of fuel for the body’s cells, especially during exercise. This quick conversion makes carbohydrates an efficient energy source, particularly during high-intensity or prolonged physical activities.

In contrast, vitamins and minerals play crucial roles in metabolism and maintaining overall health but do not provide energy directly. They support various bodily functions such as enzyme activity and immune response. Fiber, while important for digestive health, does not provide calories or energy; instead, it helps regulate the body’s use of sugars and maintains bowel health. Therefore, carbohydrates stand out as the primary nutrient for energy supply in physical activities.