Abby, I've been really sick and busy, or I would've responded earlier.
There are a couple of PubMed articles on that. The first sign of MG is often more sleeping/napping. It's like when a car runs out of gas, it simply stops working well or at all. Acetylcholine makes all of our 640 skeletal muscles go. When that is running on empty, our bods just don't want to or can't move.

That makes our entire body worn out and it puts us to sleep.
Hope you're doing ok. You too, Erin.
Annie