High-Tech Personal Trainer

Courtesy of Garmin

If you are annoyed at your personal trainer yelling at you at the gym, take a look at this next generation GPS-enabled heart rate monitor from Garmin.

Track your progress from one workout to the next, compete against your stats from yesterday's run, and store your data on the computer.

Forerunner 305 lets you customize up to twelve data fields to give you instant feedback on your workout. Use the free software to analyze data on your computer, or try the web-based service. Prices from $300 at Garmin.