An energy bar, as the name suggests, is a bar-shaped food that replenishes energy. It is also called energy sports nutrition food. It may not be very familiar to everyone. By mainly consists of carbohydrates, protein. Suitable for adults. It originated in 1985, only a short history of more than 30 years. It was specially developed as a sports nutrition food by a marathon runner's wife - a nutritionist. Although energy bars started late, they have developed rapidly, both in terms of technology and sales volume have skyrocketed. In the United States alone, in 2002, sales of energy bars have reached 710 million.