Polar's Vantage fitness watches now offer daily training guides

If you're planning to counter all those holiday dinners with rigorous exercise, Polar might have your back. It's updating its Vantage V and Vantage M watches with some particularly useful coaching features, most notably the FitSpark personalized training tool. As on earlier hardware, it provides a daily training guide that suggests exercises based on your history, fitness level and sleep quantities. You'll have a better sense of whether you should be burning calories with cardio workouts or hitting the weights instead.

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