The nutrient that is essential for providing energy to the body is carbohydrates. Carbohydrates are one of the three macronutrients that play a vital role in human nutrition, along with proteins and fats. They are broken down into glucose, which serves as the body's primary energy source for daily activities and functions. Carbohydrates can be categorized into simple carbohydrates (sugars) and complex carbohydrates (starches and fiber). Foods rich in carbohydrates include grains, fruits, vegetables, and legumes. A balanced intake of carbohydrates is important for maintaining energy levels, brain function, and overall health.