TCOLE Fitness and Wellness Practice Exam

The classification of simple carbohydrates as "empty calories" is rooted in their composition and digestion. Simple carbohydrates consist primarily of sugars that are quickly absorbed by the body, leading to spikes in blood glucose levels. Common sources include sugary foods and drinks, like candy, soda, and baked goods, which often provide little to no vitamins, minerals, or fiber—nutrients essential for overall health.

This rapid absorption of simple sugars can result in a quick source of energy; however, without accompanying nutrients, they do not provide sustainable energy or health benefits, which is why they are labeled as empty calories. In contrast, complex carbohydrates, fiber, and starch are generally more nutritious, as they take longer to digest, contribute to satiety, and are often found in foods that are also rich in essential nutrients.