Not at all. Protein is an important macro nutrient that is needed for basic body function but if you are not working out to break your muscle fiber tissues for muscle growth, your body won't be able to use protein to rebuild muscle tissues but rather just use it for energy. 1 g of protein contains 4 calories. Once the body uses the protein for essential body function, the excess protein will be converted into energy and if you don't need the energy, it will be converted into body fat. Protein or protein supplements are not magic pills for muscle. You need to eat a proper diet (calorie surplus) with proper amount of protein, fat,and carbs and also you need physical exercise to achieve a muscular body. Hopefully this helps and to learn more about protein and its function in health and muscle building, you can check out the detailed video above.