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Relaxed Every body type shows the muscular contour where the chest muscles (pectorals) wind into the shoulder muscles (deltoids).

When relaxed, the collarbone is horizontal and the outer ends should not tilt downward. The outer ends of the collarbones can tilt upward, but in general the collarbones should be parallel to the ground. A perfectly horizontal collarbone is one indicator of a lack of tension in the body.