Cribbing ping.
Title mismatch...
I have a granddaughter who fights sleep when it’s naptime. Her mother was the same way.
I totally believe this. We have 2 yo twins (soon to be 3 yo) and I often notice an abrupt jump in their language skills when they get up from their naps. One of them in particular is not only very chatty right after naptime, but he comes out with all sorts of new phrases that I haven’t heard him say before. It’s like he’s sorting things out in his sleep. (Of course, it’s a royal pain to get them to take the naps in the first place! LOL! But it seems worth it. Also for my sanity. :)