Protein blends are a combination of several types of protein. They are made with whey, milk, egg or soy protein. Egg protein is considered as one of the best forms of proteins by fitness experts; however, soy protein is a decent source of protein for vegetarians. Protein blend powders also contain glutamine and creatine to build muscles, and speed up recovery time, adding on to the immense benefits of different proteins present in them. It provides a time-released effect when combining proteins that digest at a faster or slower rate. Since they combine different proteins that get digested at different rates, they can feed your muscles for a long time. The advantage of a protein blend supplements is that it ensures a sustained protein release.