To build lean muscle, you have to ensure you are getting the right amount and the right kind of calories to ensure the proper nutrients available to build and repair muscle. You will also benefit from supplements that can boost your strength, muscle endurance and size. You also want to maximize nutrient delivery to the muscles and so you can get outrageous pumps in the gym! The number one requirement for building lean muscle is protein. A good whey protein or combination protein has a superior level of essential amino acids compared to normal foods. Higher intakes of protein boosts your metabolic rate and helps keep your diet on track by decreasing food cravings. It also ensures that you don’t lose muscle when you’re trying to burn fat.