Don't just go out for a run. Analyze it with the Polar RS400 Heart Rate Monitor. This heart rate monitor keeps track of your average, maximum, and target heart rates so you know how you're performing. The Polar OwnCode feature keeps other people's heart rate monitors from interfering with your RS400. The RS400 heart rate monitor tells you when you've recovered from your last workout with the Polar OwnOptimizer feature, which analyzes your heart rate at rest. After you've logged your 10-miler, hook this heart rate monitor up to your PC and check out your progress.
Bottom Line: Take an interest in your running performance level with the Polar RS400 Heart Rate Monitor.