Our posture affects us both physically and mentally. We tend to slouch when feeling down or depressed and we stand straighter when proud or in a good mood. We can also ‘fool’ our minds into feeling better by straightening our posture. So if things aren’t going right, try sitting up and smiling – I guarantee your playing will instantly improve.
Standing properly allows us to breathe easier by expanding our chest cavity. We can take deeper breaths. Correct posture also promotes body alignment which reduces tension and the risk of injury. Pressure on spinal discs is eliminated. Tone also improves as relaxed weight promotes a large and free vibration of the string.
Here are some links for further exploration:
Thanks and happy holidays!