Instead of me telling you what everyone else does like 1g protein is equal to 4 calories and that protein is made up of amino acids or that your protein sources are beef , poultry,fish, eggs , venison, dairy etc.
I’d like to give you a bit more insight to protein .
Protein are the building blocks of all organisms in the body ( bones, muscle, cartilage skin and blood) . They have about a 10% greater TEF ( thermic effect of food ) than the other macros naming fats and carbs . Meaning they utilize more calories to digest . Also aids in muscle repair and recovery as well as assists in satiety proteins are also important for manufacturing enzymes, hormones and other body chemicals.
Protein can also be an energy source. And if you have consumed more than your body needs for body tissue maintenance and other necessary functions, your body will use it for energy.
If you consume too much protein and your body also has surplus energy from the other nutrients carbs and fats then excess protein can be converted and stored as fat .
Protein is also involved in the creation of some hormones. These substances help control body functions that involve the interaction of several organs. Insulin, a small protein, is an example of a hormone that regulates blood sugar. It involves the interaction of organs such as the pancreas and the liver. Secretin, is another example of a protein hormone. This substance assists in the digestive process by stimulating the pancreas and the intestine to create necessary digestive juices.
Enzymes are proteins that increase the rate of chemical reactions in the body. In fact, most of the necessary chemical reactions in the body would not efficiently proceed without enzymes. For example, one type of enzyme functions as an aid in digesting large protein, carbohydrate and fat molecules into smaller molecules, while another assists the creation of DNA.
Protein also serves as a transportation and storage molecule. Example of this is hemoglobin serves as a transportation channel for oxygen throughout the body .
Protein also forms antibodies that help prevent infections, diseases and illnesses .
This is but just a few of proteins and amino acids functions in the body.
In concluding this I hope I have enlightened you that protein is much more important than just the needs for building muscles ?