Mostly carbs and fat - protein was incidental. Felt OK physically and mentally but felt "full" - uncomfortably full, and I was. Not recommended unless you are testing how your body functions/behaves to stimulus. The most interesting thing to me is the acetone measured in breath. It's definitely NOT what I expected.

Hopefully this answers your questions

I plan on breaking 80 hr. fast tomorrow morning with standard lowcarb meal - beef and some greens - then go "work out" all day on the ice or snow somewhere.