Every year hundreds of people travel to Baltimore for an unusual purpose. They are not there to tour the city's aquarium or sample its fabled blue crabs. They are not in search of fame or money. Other than free lodging, they receive nothing in exchange for their visit, which entails a certain amount of discomfort. No, these folks, some of whom have made this journey for decades, believe the trip is worth their time and expense because how they live — calculated according to everything from the strength of their grip to how many apples they consume in a month — may offer clues to how the rest of us might live better, longer, healthier lives.
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