For this exercise I want you to stand in your favorite room. Now, without rotation, twisting or bracing walk straight into the wall. It may take a few times to convince yourself that it can involve the whole body and really "hammer that nail". And it may take a few more times before it feels "natural". But isn't that king fu training? there are no free rides. If it still feels like this action would lead to a kinder, gentler chi sau, try it faster and allow no hesitation in your intent.

And make sure you post a video of that!