Daytona running slow

[mmcclaskey]

I have a Daytona 116523 that is running 60 seconds a day slow. The Dealer suggested I do the following before sending it back to him for repair. I am not concerned with getting this problem resolved, I just have never heard of this problem and the suggested procedure for me to try. Anyone have any information?

"It sounds like a hairspring entanglement. Let the watch run down until it
stops. Then give it a tap the back with your index & middle finger as if a
doctor is testing for a vein. Set the watch then wind it 35-40 times. This
should do it. "