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The erector spinae
Erector spinae
Erector spinae
Lateral bending of the spine.
Erector spinae muscles
Erector Spinae
yes
a muscle
in your back.
Erector Spinae are extensor muscles encompasing the neck and trunk. Extensor movement is antagonistic to flexor movement. Therefore, find a muscle of the neck and a muscle of the trunk that act as flexors. That should answer your question without giving away all of the milk and honey!
The erector spinae
The erector spinae