Self-Winding Question

[Norton]

I've always wondered: Does my Rolex self-winding movement ever wind the watch fully? I realize that the mechanism winds continuously throughout the day as it's being worn, but it's also winding down simultaneously as the watch runs. After 8 hours of normal wear, it it fully wound? When I say "fully wound," I mean as if I manually wound the watch with 25-30 turns of the crown.

I hope this is not a silly question, but since the self-winding action is virtually undetectable to the wearer, it's somewhat mysterious!