A woman reacts after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, Washington January 1, 2014. Hundreds participated in the chilly New Year's Day tradition, organized by Seattle Parks and Recreation and held at Matthews Beach. (Photo by David Ryder/Reuters)

Participants jump into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa January 1, 2014. (Photo by Chris Wattie/Reuters)

A participant reacts after jumping into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa January 1, 2014. (Photo by Chris Wattie/Reuters)

People run into the water just off the Boardwalk January 1, 2014 at Coney Island in the Brooklyn borough of New York City. Hundreds of people gathered for the annual New Year's Day Polar Bear swim in the ocean. (Photo by Christopher Gregory/Getty Images)

People pose next to a polar bear costume worn by two participants in English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, British Columbia on January 1, 2014. (Photo by Ben Nelms/Reuters)

Participants run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, British Columbia January 1, 2014. (Photo by Ben Nelms/Reuters)

Participants run into Lake Washington during the 12th annual Polar Bear Plunge in Seattle, Washington January 1, 2014. (Photo by David Ryder/Reuters)

Polar Bear club swimmers take their annual swim in the sea at Coney Island in New York City on January 1, 2014. (Photo by Curtis Means/ACE/INFphoto.com)

Polar Bear club swimmers take their annual swim in the sea at Coney Island in New York City on January 1, 2014. (Photo by Curtis Means/ACE/INFphoto.com)

Polar Bear club swimmers take their annual swim in the sea at Coney Island in New York City on January 1, 2014. (Photo by Curtis Means/ACE/INFphoto.com)

Pat Hallor goes face first into the ice waters. The annual Polar Bear Plunge in Milwaukee was held at Bradford Beach on Wednesday, January 1, 2014. (Photo by Mike De Sisti)

Resl Weigel, (left) of Milwaukee submerges herself in freezing cold water. The annual Polar Bear Plunge in Milwaukee was held at Bradford Beach on Wednesday, January 1, 2014. (Photo by Mike De Sisti)

Resl Weigel, of Milwaukee screams as she leaves the icy water after taking a plunge. The annual Polar Bear Plunge in Milwaukee was held at Bradford Beach on Wednesday, January 1, 2014. (Photo by Mike De Sisti)

Bud Fox, of Brookfield, is overcome with cold as he lays in the chilly water. The annual Polar Bear Plunge in Milwaukee was held at Bradford Beach on Wednesday, January 1, 2014. (Photo by Mike De Sisti)

Dana Kenney, Fox Point screams from the cold as she exits the lake after a short dip. The annual Polar Bear Plunge in Milwaukee was held at Bradford Beach on Wednesday, January 1, 2014. (Photo by Mike De Sisti)

Swimmers in fancy dress participate in the New Year's Day Looney Dook swim at South Queensferry, Scotland January 1, 2014. (Photo by Russell Cheyne/Reuters)

Participants in the 6th annual Polar Bear Dip & Dash run from the East End Beach into Casco Bay in Portland, Maine, December 31, 2013. According to the National Oceanic and Atmospheric Administration (NOAA), the water temperature in Portland is 42.4 degrees Fahrenheit and the air temperature is 9 degrees Fahrenheit. (Photo by Joel Page/Reuters)

Participants react after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, Washington January 1, 2014. (Photo by David Ryder/Reuters)

A girl pleads to go back to shore after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, Washington January 1, 2014. (Photo by David Ryder/Reuters)

People participate in the annual Coney Island Polar Bear Club dip, in the Brooklyn borough of New York January 1, 2014. The Coney Island Polar Bear Club is the oldest winter bathing organization in the U.S. and every New Year's Day holds the winter plunge which attracts thousands of participants. (Photo by Allison Joyce/Reuters)

A man jumps into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa January 1, 2014. (Photo by Chris Wattie/Reuters)

Swimmers jump into frigid waters at Coney Island beach in New York, Wednesday, January 1 2014, as they take part in the 111th Annual New Year's Day Polar Bear Plunge. (Photo by Craig Ruttle/AP Photo)

Two people wear a polar bear costume while running into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, British Columbia. (Photo by Ben Nelms/Reuters)

Sheboygan Polar Bears run into the cold Lake Michigan waters at the lakefront in Sheboygan, Wisconsin. (Photo by Gary C. Klein/The Sheboygan Press)

Girls react to the frigid waters of Pontiac Bay during the 12th Annual Polar Bear Plunge at Matthews Beach Park in Seattle. About 300 people participated in the first Polar Bear Plunge in 2003; since then, attendance has reached nearly 1,000 attendees. (Photo by Jordan Stead/Seattlepi.com)

Participants react after entering Lake Washington during the Polar Bear Plunge in Seattle. (Photo by David Ryder/Reuters)

Participants react after entering Lake Washington during the Polar Bear Plunge in Seattle. (Photo by David Ryder/Reuters)

Participants run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, British Columbia. (Photo by Ben Nelms/Reuters)

Swimmers, some in unusual costume, swim in the frigid waters at Coney Island beach in New York as they take part in the 111th annual New Year's Day Polar Bear Plunge. (Photo by Craig Ruttle/Associated Press)