A. “All my limbs will say..” (Psalms 35:10) is a source for involving all the body in prayer. When listening to music, people often do body motions, too. Think of groovin’ at a concert. It is a sign of “being into it”. On this verse, there’s an interesting note in the Talmud: The more we involve our bodily motion in study, the longer we retain memory of the information. I’ve noticed some modern educational psychology following this method.