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7 digital fitness coaches

Every January countless Americans vow to get in better shape. Make this year different with these gadgets - no personal trainer required.

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Adidas miCoach Pacer
Adidas miCoach Pacer
If you are a serious runner who's hit a plateau

Price: $139; shopadidas.com

To improve endurance, you've got to get into the right heart-rate zone. The miCoach Pacer, which can be attached to any MP3 player and includes a heart-rate monitor, uses an assessment run and data you enter via computer to build workouts that keep you in the zone.

NEXT: Timex Ironman Sleek 150-Lap
Last updated January 15 2010: 7:50 AM ET
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