Why do we shake the lulav and esrog during hallel? Why do we only shake it at certain verses? Why do we stop shaking at Hashem's name? Why does the Torah stay in the center without moving during Hoshanos? Why don't we move at all on Shabbos? Why does the Torah enter into our circle on Shmini Atzeres/Simchas Torah? Find out in this week's Parsha Podcast.