Is this the ultimate hangover cure? Many countries have a tradition of taking a freezing dip on New Year's Day. In the Netherlands, thousands of hardy swimmers travel to the seaside resort of Scheveningen for an invigorating January dive. The tradition dates back to 1965 - and the brave are rewarded with hot chocolate or Dutch pea soup when they emerge from the waves. newyearsday swimming seaside hangover fitness bbcnews