I've been there Kathy. Sleep is impossible when I'm manic. I had hallucinations one night and had this uncontrollable urge to go running at 3am.

Another time while remote working, I was working on solving a complex database issue and stayed up all night trying to solve it, which I eventually did. The euphoric feeling afterwards just added fuel to my episode.
Thanks for sharing these insights. I'll check out the previous stories in the series.