Carbohydrates provide the body with energy and are divided into two types: simple and complex. Simple carbohydrates like refined sugars and fruit are easily digested while complex carbohydrates like whole grains provide sustained energy. Carbohydrates are the body's primary source of fuel and are broken down during digestion to be absorbed and used for daily activities and organ function. Choosing whole grains, vegetables and fruits supplies carbohydrates for energy in a healthy way.