Technology: SHE SINGS THE BODY ELECTRIC

Video games have traditionally been the enemy of exercise. Yourself!Fitness(on Xbox now; on PC in November and PS2 in January) may help change that. The new conditioning game is a virtual personal trainer that trades the usual gurus of home-exercise videos for a digital workout expert named Maya. Yourself!Fitness functions like an interactive workout tape. You input personal data, including height, weight, push-up proficiency and fitness interests, and Maya recommends a fitness routine and schedule. Then the warm-up is over. Maya leads you through heart-pumping workouts drawn from disciplines like yoga and Pilates. Unlike her prerecorded video counterparts, Maya will vary...

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