While on vacation in Daytona Beach one summer, a family quickly fell into a regular daily routine. The first thing on the agenda every morning was a power-walk on the beach. They usually walked as fast as they could on the firm beach the mile or more to the pier, where they then enjoyed a nice breakfast at Crabby Joe's place. Then they completed their daily exercise as they hiked back with the morning sun beginning to warm the day.

Then after all the day's activities of shopping, swimming, sailing, and surfing, they'd take another long walk on the beach at dusk. This time wa…