Whether you’re in the middle of a workout session or reflecting back post-sweat, it can be difficult to accurately tell how much energy you’re expending, objectively gauge how effective a workout is or how hard you are really working. Today’s technology options, such as heart rate monitors, remove the guesswork and help you hit your goals. While heart monitors are not a requirement for an effective workout, they certainly help you monitor your progress, provide a barometer of intensity, and accurately track information to set goals.

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