Lindsey Stirling is passionate about moving while she plays her violin. She really feels the music and shows it! But notice that she has learned how to keep her LH (left hand) wrist nice like a slide the whole time (no “pancake” wrist here!). AND she keeps her bow nice and parallel to the bridge the whole time (no crazy “skiing” all over the place bows). If you can get those two things to work for you (your LH and your bow arm) so that you are strong and steady, then you can move your body to the music more freely and joyfully! So keep working on those important posture position skills!