Running two miles uses the amount of carbohydrates found in how many slices of bread?

The correct answer is based on understanding the energy requirements for physical activities, particularly running, and the nutritional content of carbohydrates in food like bread. When running two miles, a person typically expends a significant amount of energy, which primarily comes from carbohydrates stored in the body.

On average, a slice of bread contains approximately 15 grams of carbohydrates. Running two miles can deplete the body’s carbohydrate stores significantly, depending on various factors such as the individual's weight, pace, and overall metabolism. These carbohydrates are crucial for providing the energy needed during the run.

For a two-mile run, research suggests that the energy expenditure could range around 200 calories or more. Since each gram of carbohydrates provides about 4 calories, running two miles can use roughly 50 grams of carbohydrates. Therefore, when dividing 50 grams by the 15 grams found in a slice of bread, it becomes clear that about three slices of bread would provide a similar amount of carbohydrates.

This illustrates the importance of understanding how energy requirements during exercise relate to food intake, particularly carbohydrates, to fuel physical activity efficiently.