Ice swimmers enjoy a bath in the cold water of the Zegrzynski lake in Nieporet near Warsaw, Poland on Sunday, March 17, 2013.
The temperature was 32 Fahrenheit.
A Russian man swims in the icy water during an ice swimmer’s festivity in St.Petersburg, on Sunday, Feb. 10, 2013. The temperature in St. Petersburg was around 27 Fahrenheit.
Russian people dressed as Santa Claus take a swim in an ice-hole in the Siberian city of Novosibirsk on December 30, 2012.
A swimmer with a crown and trident enjoys the cold water during a traditional ice swimming session on December 23, 2012 in Lanke, which is north of Berlin.
German swimmer prepares a hole in the icy surface of a lake.
Winter swimmers make the hole bigger.
Note that there are more spectators than swimmers.
A Chinese ice swimmer takes his daily swim in the frozen Houhai Lake in Beijing on December 9, 2012.
A Chinese ice swimmer is watched by passersby after his daily swim when it is 28 Fahrenheit.
Winter swimming is especially popular amongst the elderly as it is believed to improve circulation and benefit health, and also said to increase the level of mental awareness, release stress, remove aches and pains, increase vitality and keep skin looking younger.