why are body uses carbohydrates first
Carbohydrates: Your Bodyâs Primary Fuel Source. Carbohydrates are your bodyâs main fuel source. There are two types of carbohydrates: simple and complex. Simple carbohydrates are carbs that your body can break down into glucose and burn as energy almost immediately. If you eat a slice of watermelon, it only takes about 20 minutes before the sugar hits your blood stream.