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cardio zones
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The Science Behind What Is Good Heart Rate When Working Out
The first time you strap on a heart rate monitor, the numbers flashing on the screen can feel like a cryptic message from an alien lifeform. That 140 bpm...
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The first time you strap on a heart rate monitor, the numbers flashing on the screen can feel like a cryptic message from an alien lifeform. That 140 bpm...