Polar plunge

Ran by the boat house at North Avenue yesterday with my running group and saw lots of tents but no people.  Seemed odd for this time of year and too early for any glitzy social event like beach polo or some of the other can't miss gatherings later in the season.  Then this morning in the car drove by and saw hundreds of folks, buses, vans, trolley cars, and a sign "Chicago Polar Plunge" a fund raiser for the Special Olympics where folks dash in and out of Lake Michigan and then into those tents to avoid hypothermia.  And they say marathoners are crazy?