Sorry, I should have included the link;
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Red_hair#Pain_tolerance_and_injury" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Red_hair#Pain_tolerance_and_in...</a><p>When I had my appendix removed when I was about 12 I awoke and tried to sit up in the middle of the operation.  I remembered it and confirmed it with the doc in post-op. The OP&#x27;s story of waking up during the wisdom tooth extraction reminded me of my experience. Years later I learned of the connection between pain tolerance and red hair, which I have.