Best Training Technique

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Coming To a Gym Near You

To beef up his quads for the winter, Bode Miller pushes a clay-court roller (his family owns a tennis camp) around his hometown of Franconia, New Hampshire, for 40-second spurts, three days a week. No big deal? It weighs 600 pounds. "The roads aren't exactly flat," he says. "It's a sick workout." "Sick" being the operative word.