Strapping a heavy duty watch to your wrist and a heart rate monitor to your chest seems like a lot to handle at first blush, but if you're running for performance, it's essential. The Run Trainer tracks your stats and your location so you can upload workouts to software like TrainingPeaks and keep track of progress leading up to a race. The heart rate monitor keeps tabs on your old ticker so you can get the most from your workouts by training in the appropriate heart rate zones for your specific goals – whether that's fat loss or pushing the upper limits of your running performance. [$230; amazon.com]
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