I think sleepwalking _is_ a defined thing.  <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Sleepwalking" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Sleepwalking</a>  What Zaphar is describing is not true sleepwalking, it&#x27;s just that he was awake such a short time that he didn&#x27;t form memories about it.  In much the same way that I can&#x27;t remember how I walked to work this morning.