Does this make sense?

[PatrickJ]

In my profession, I could be working different shift patterns and this is not good for the power reserve on my watch. I don't want to buy a watch winder.

I have a 39mm, Explorer, cal 3132, 44 or 48 hours power reserve.

From recollection a Rolex I think needs 650 bi directional turns daily to maintain its full wound power reserve. This is after an initial manual wind of around 40 turns.

So if I swing my arm forward then backward that would equate to one bidirectional turn. If I do this 650 times it would take just under 11 minutes.

In theory this could mean my watch would retain its full power reserve by an 11 minute brisk walk per day. Even if the watch was only worn for that 11 minutes in the day.

Does this sound correct? Or in reality it does not work like this.