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ALTERNATE ROUTES

U.S. Olympic marathoner Meb Keflezighi offers five ways to juice your training regimen without extra apparel—or overly taxing your body
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Cross-Training

Use an elliptical bicycle in high-energy 45-minute intervals

Aquatics

Jog in a pool for an hour to improve lung capacity

Cycling

Ride for anywhere from 45 minutes to 1½ hours a day

Core Workouts

From planks to push-ups, core strength improves overall fitness

Partner Up

Running with someone helps you stay motivated and reach your goals more easily

PHOTO

STEVEN SENNE/AP (KEFLEZIGHI)

FIVE ILLUSTRATIONS