Carbohydrates could be divided into two groups:Simple carbohydrates and complex carbohydrates. Simple carbohydrates which are called mono-saccharides while the complex ones depending on their length.
When people talk about fat, most of them tend to associate it with the layer of fat underneath our skin. They would also refer to its role in gaining weight.
Protein is found throughout the body—in muscle, bone, skin, hair, and virtually every other body part or tissue. It makes up the enzymes that power many chemical reactions and the hemoglobin that carries oxygen in your blood. At least 10,000 different proteins make you what you are and keep you that way.