Avoiding Surcharges. Because airlines charge a peak travel day surcharge on the most popular days of travel -- Sunday, Monday and Friday -- you can get the best discounts on those off-peak days. However, during the summer, peak and off-peak travel days do not really exist.
Proteins are essential nutrients for the human body. They are one of the building blocks of body tissue, and can also serve as a fuel source. As a fuel, proteins contain 4 kcal per gram, just like carbohydrates and unlike lipids, which contain 9 kcal per gram.
Muscles, hormones, enzymes and antibodies are all made of proteins. Proteins aid blood clotting, fluid balance, buffering, vision and transportation of vital substances throughout your body. Protein can be metabolized for energy when carbohydrate and fat are in short supply. wide variety of proteins exist and are necessary for numerous functions. If your diet lacks sufficient protein over time, many body processes slow down, eventually compromising your overall health. Organs such as the heart and liver may actually decrease in size, as will muscles and blood proteins.