Rich carbohydrates items top ten instant source of energy carbs are very essential for human body  they provide at instant rate  of energy when you eat  carbohydrates  and  your body  metabolism
Works correctly  they are not very costly easy to avialable  it can store at a long time in a colder temprature such freezer and  they produce essential enzyme   for example human can eat carbohydrates and drink water live 20 days