The first day went great. Today my brain and my fingers wanted to type completely different things, and my backspace button got a great workout. My brain started to fizzle out during longer writing sessions and not cooperate with my fingers. It wasn't writer's block; I haven't any major problems with writer's block during this story. It was just mental and physical exhaustion from writing so much in the past two days. This is what the three-day novel is all about.
And my creation shows it. I'm at 40,000 words right now. My plot is starting to wrap up. One of the plot lines is nearly finished except for the aforementioned not-quite-affected ghost. The others still need to be wrapped up before being finished, but they're nearly there. I can easily finish tomorrow without any major noveling marathons.
If I've learned nothing else from the three-day novel, it's what I really should have learned from NaNo: novel-writing really is a sport. Who knew sitting down and writing could be so physically exhausting?
And before you ask, I have no plans to repeat this experience during NaNo. Don't get your hopes up.
But if you don't want to do the three-day novel or NaNo, here's a noveling contest for you.