Ian
No not the cold. I for one, when January comes every year, have written in my working capacity the previous year some 4 to 5 000 times. Trying to get the brain to understand that it is a new year is no problem, but my hands are still writing the previous year no matter what I do...

and it takes a couple of weeks before my hands follow the brain...
A really strange battle I have performed for the past 40 years!
Cheers
Stig