Hey, grats on the fun evening! lol Glad you're feeling better to boot.

I'd suspect the muscles. My suggestion? Odd as it may be, try to see if you can't limber up a bit before anything starts. You know where the soreness was better than I could imagine (limitations of anatomy and what all ), but maybe if you could stretch a bit before any...er..."strenuous activity"...it might help after the fact.

I hope things continue to improve, and I wish you all my best.

Hugs,
Harley