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