“I thought it would be easy to immerse my hand in a bucket of thirty-two-degree Fahrenheit water (zero degrees centigrade). I swam across the Bering Strait wearing a swimsuit in thirty-eight-degree Fahrenheit water (three degrees centigrade). I swam for two hours and six minutes and reached Russian shores. The water temperature in the bucket was only six degrees colder than the Bering Strait, but my hand ached.”