Played My Drums Wearing My Aqua Terra... yeah, don't

It won't, unless there's a fault. When an automatic watch is worn, the mainspring is at full wind for most of the day if you are active, so adding more wind won't cause a fast rate, unless the mainspring is not slipping in the barrel properly. If the mainspring doesn't slip when it should, it's possible for the spring to impart more torque to the movement than it was designed for. This will increase the balance amplitude, and cause the watch to go into a condition called rebanking. This is a state where the balance amplitude is so high, that the impulse pin (roller jewel) travels too far, and strikes the outside of the pallet fork horn, and it "bounces" off that in the other direction. This returns the balance the opposite direction faster that the balance spring would normally do so, and if the torque level stays too high, it will bounces back the other way. This can result in a very fast rate - this is also sometimes called knocking, or even galloping, because it sounds a bit like a galloping horse. Here's a video - I'm taking a full wound watch and turning the crown even further to make it rebank:


Again, this only happens when the mainspring isn't slipping as it should. If the watch runs normally when fully wound, it is unlikely to be this that is causing a fast rate.

In this instance, it is likely just inertia. Whenever you move your wrist while wearing a watch, you will impart external forces on the balance. Depending on what direction that force is going compared to how the balance is moving, it may either add of subtract from the forces moving the balance. If it adds, it can again cause excessive amplitude, and this will result in timekeeping changes.

Even if I take a watch and put it on my timing machine, and turn the microphone stand quickly, the rate will jump all over the place until it settles (rate resumption). If you are wearing a watch while constantly making forceful movement like playing the drums, it's not too surprising that the timekeeping may be off. BTW, in this case it doesn't matter if it's an automatic or manual wind watch.

Cheers, Al

Great, and for the record I was simply using your post as a jumping off point to answer the non-rhetorical questions in the thread. 😀

Gentlemen, your collective horological brilliance is giving the less cerebral among us (i.e., me) a headache, but it makes for very interesting reading. 😀