Protein is a vital macronutrient essential for numerous bodily functions, including muscle growth, tissue repair, and the production of enzymes and hormones. It is composed of amino acids, which are necessary for building and maintaining muscle mass, supporting immune system health, and facilitating various metabolic processes. Proteins can be sourced from both animal and plant foods, such as meat, poultry, fish, eggs, dairy products, legumes, nuts, and seeds. Incorporating adequate protein into one's diet is crucial for overall health, especially for those who are active, recovering from injury, or aiming to build muscle. Balancing protein intake with other nutrients, and choosing high-quality protein sources, can help optimize health and support long-term wellness.