Yesterday I duck dived a wave and something really strange happened; it felt somewhat like I had created an air bubble around my face as I duck dived because I didn't feel the bite of cold water on my face/forehead even after reaching the surface. Maybe my hood visor helped somehow?

Does anyone change their approach to duck diving in the winter to avoid / minimize the brain freeze?

The only thing I really do to adjust to cold water is better time my paddle outs and try to avoid duck diving all together.