Anyone that is trying to build muscle should know that protein is one of the key building blocks to growing and maintaining muscle. Well, it doesn't stop there!
Why do we need protein?
So the obvious answer is to build and preserve muscle. You have to get plenty of protein if you want to build muscle, especially if you're working out. The more active you are, the more protein you need.
Protein is the material what you need to build your muscles.
But there's other benefits too, it improves bone strength and density, joints and joint mobility, helps build healthy hair, skin, and nails, and it increases satiety. So, protein's the one macronutrient that helps you feel fuller longer.