Well, it sort of depends on what, in particular, you're referring to.
Everything sort of has a meaning, but in large part the more physical worship is more or less "free."
Ok, that is fair. I come from a ritualistic background, so this is how I think...
Um so what does it mean when you raise your hands, when you jump, when you clap your hands, when you run around the church? Are there specific reasons for these things?
Suzuki