After Charlie Futrell retired from teaching middle-school history and phys-ed in 1976, the former college and pro baseball player put on a few pounds, as a lot of us in our 50s do. But a couple of years later, when he saw a pair of sneakers in a store's bargain bin for just $3, he decided to do a little running and try to get back in shape. His first jog left him gasping for breath. OK, a lot of us have done that, too.
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