Rather than filling your body with fatty meats, poor-quality fish, and low-protein dairy products, opt for sources that fuel your body with the nourishment it craves.

After all, building up your muscle mass isn't just a function of working hard in the gym—you need to provide your body with the necessary proteins to rebuild exhausted muscles (and keep them working properly).

These five sources have the optimal combination of vitamin, nutrients, and macros to promote good health and foster impressive muscle growth