6 Foods That Help Gain Muscle Mass

Its protein composition is complete and balanced, as it contains all the essential amino acids. Egg protein is found primarily in the white, but the yolk also contains protein.

Meat

Meat provides 15 to 22% protein. It also contains minerals such as iron, zinc, and phosphorus.

A common question is whether red and white meat differ in protein content. The truth is, there’s no significant difference between them. The only differences may be the amount and quality of fat.