haha, I've never had that happen. I've seen my nerves jump before, but never on a muscle i was working out.
I use to have them cramp if i stretched toes pointed so i stopped. First time this has happened in a while, and the nerves jumping was so weird.
Also, to the second poster. I stretch, but never any foam rolls or anything. What do you think? My calves are super detailed and good size. I hardly work them out, but i do. Just have good genetics. So i don't think soft tissue damage, or scar tissue?