Ask someone in the weight room to point to their trapezius muscle, or “traps” in gym-speak, and they’ll probably gesture toward the small mounds of muscle nestled in between their neck and shoulders.

Have you ever slept wrong and woken up with a kink in your neck? The muscle that's kinked is part of your trapezius. The more you know about your traps, the less of a pain in the neck they will be.