Chi - during forms

in Kuk Sool, we are told that our forms are designed to align the body to enable proper flow of internal energy... My question is, do styles like Chun Kuk Do in the video below do the "ch" sound for each punch and kick to somehow augment their Chi flow ? Honestly, I think it's done for effect, like starching your Gi..either way, it seems silly and unnecessary to me. Am I wrong, what evidence is there to the contrary?



Thanks!