It's the lack of sleep that is a problem.
I don't know. You learn how to sail and manage a boat and all you worry about is sleep. Sounds about right to me. It is about what is important.
My buddy Max has it down quite well. He did a single handed November passage
to the Azores
in early November. Anytime the winds got over 30 knots he just set the self tending stay sail and went below and slept. It wasn't an easy trip but he slept well. Not sure how well he ate. Took 3 months to clean up all the salt water
that leaked below and damaged all sorts of stuff and made the boat stink. He still is living aboard
with his wife on a 33 ft boat. She never does the passages but instead flies in and joins the trip and sails
the shorter hops and does all the rest of the trip just fine. It's a way that works for them and quite well too. Not everything is about one way to do things. Making your sleep work really is important and I don't want to under emphasize the priority it requires.