I cannot answer, but I have a specific question to ask: When doing woodchops on a cable machine, do I keep my hands at same distance from my body all the time (i.e, keep arms stretched, move handle in a wide arc) or do I pull close and then shove away while turning?.

(I tried the movement of actually chopping wood -- starting with elbows bent and going to straight while turning -- but that makes no sense at all.)