I also sometimes use hot drinks or soup, hot snapz, warming up in saunas or vehicles with the heat cranked up, lying in the sun if it's sufficiently strong, and hot tubs (I really enjoy that last one if I haven't gotten too chilled–otherwise they're too hot ). What about you? IronMike March 2012 … After a few uncomfortable experiences last winter, I've learned to have a few 'redundancies' on hand – e.g. extra clothes, blankets, food and warm drink, car heater – just in case. ssthomas March 2012. …

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Warming up after a cold water swim – Marathon Swimmers Forum