At the kickboxing class I just started going to, they had us doing a drill where we ducked under a stick they swung at us simulating ducking a hook or a kick or whatever. Anyway, they told us not to bend from the waste but to keep our upper body posture and dip down with our legs. That seemd a lot different then a lot of what I've seen elsewhere. Anyway my question is... is that common? is it specific to kickboxing? you know, what context does doing it like that fit in. Danke.