What is the best muscle-building product?

Whey protein powder is the most important supplement for muscle-building. It increases protein synthesis by eating through fat and stimulating blood flow to the muscles, explains Muscle and Fitness.

Whey is a type of milk protein that contains many amino acids that aid in muscle recovery and growth. Muscle and Fitness recommends that users take 20 to 40 grams of whey in the morning upon waking up, 20 grams half an hour before working out, and 40 grams within an hour after a workout. Muscle and Fitness also recommends purchasing a whey protein isolate or a powder with whey protein hydrolysates for rapid digestion and more efficient results.