Wynand van Dyk wrote:
...have anyone tried to alter their breathing when receiving a strike?
Get thee to a Uechi ryu (or possibly other) karate dojo.
The folks I've seen who practice Uechi and another Okinawan karate....which I can't remember the name for right now
....seem to use a sharp exhale when receiving strikes. This is just what I've observed having never actually practiced Okinawan karate.