anerlich
Brown Belt
Here is a simple example.
If your body is used to do this - freeze your body and only move your arms:
You will have difficulty to change your body to do this later on - body unification:
Dude in the second photo's rounded back will give him a short career. Horrible form. Keep your spine straight!
Of course, it could have been drawn by someone with little knowledge of kinesiology ... or artistic talent.
This is the Wing Chun forum I know and love ... nitpicking, nitpicking, nitpicking.