The zygomaticus muscles — major and minor — are far more influential than most realise. They don’t just lift the corners of your mouth; they define the entire mid-face structure and play a key role in facial expression and contour. - Anatomy in motion — These paired muscles extend from the cheekbone to the mouth corners, working every time we smile, laugh, or speak. Over time, repetitive movement and tension can shorten the fibres and compress surrounding fascia. - What happens when tension buil