I've taken part in the advent Samichlausschwimmen in 2004, 2005, 2006 and 2013.
Today I continued the tradition by fearlessly leading two of my work friends across the Limmat - with 300 other swimmers, 4 degrees cold water.
It was a beautiful sunny day, then we had very odd mist roll in, then we jumped and swam. Very, very cold.
My boys waved at me and we all warmed up with mulled wine with a shot of polish vodka in :-)