If you're a bodybuilder, you need big, strong, symmetrical muscles.
If you're an endurance athlete, you need strong, not-easily-fatigued, laugh-in-the-face-of-lactic-acid muscles.
If you're a powerlifter, you need durable, bench-press-a-Volvo muscles.
If you just want to throw heavy shit (or people) around, scare little children, or have more "show" with your "go", you need functional, strong, or esthetically pleasing muscles.
Testosterone Muscle doesn't discriminate against what job you're doing.
It just makes sure you get the job done.