When a musician is playing the violin the muscles in the upper arms are working in pairs Describe this dual action?

When a musician plays the violin, the muscles in the upper arms work in pairs through a process called antagonistic action. For instance, as the biceps contract to raise the arm and draw the bow across the strings, the triceps simultaneously relax to allow this movement. Conversely, when the arm is lowered or the bow is returned, the triceps contract while the biceps relax. This coordinated effort allows for fluid and precise bowing movements essential for producing sound on the instrument.