Chocolate contains a variety of nutrients that are important for maintaining good health. Macronutrients in chocolate include carbohydrates, proteins, and fats that can provide energy to the body and maintain normal brain cell activity. Cocoa and chocolate also contain some micronutrients, including minerals such as potassium, magnesium, calcium, phosphorus, iron, zinc, and copper. These minerals are essential for the human body. They are used to participate in some of the body's physiological activities such as muscle contraction, energy storage, growth, and nerve activity. In addition, since chocolate and cocoa are plant foods, they also contain some natural compounds known as "phytonutrients-polyphenols", which are beneficial to the health of the cardiovascular system when they enter the body. Because of the potential impact of "phyto-nutrient-polyphenols" on human health, this class of substances has attracted a great deal of interest among scientists worldwide.