Why trading practice matters
Trading forces you to stay locked into the form while leaving enough space for the accompaniment to answer. That makes it excellent for internal pulse, recovery after a phrase, and hearing where you are in the chorus without constant external help.
Trading works on blues, standards, short forms, and custom progressions. That makes it useful not only for drummers, but for any improviser who wants to sharpen rhythmic structure, internal pulse, and clean re-entry under clear constraints.