spontaneous involuntaries

This morning, I sat down without much intention to do anything. My thoughts strayed to things sexual and involuntary PC muscle contractions started almost immediately. This is unusual for me since to get involuntaries, I usually need to tighten down on my PC muscles a little. My sessions often start with p-waves without contractions.
Anyways, I rode these contractions for about 1/2 hour and had several very nice dry-o's with a background level of pleasure that was really enjoyable. If I had more time, I could have continued but I had places I needed to be.
FWIW, I didn't use the KS at all.