“Heart Rate Calculator”. You can run this file directly in your browser to calculate your maximum heart rate, target heart rate zones, and more.Heart Rate Calculator | Pro Zone
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❤️ Heart Rate Pro
MAX · TARGET ZONES · FITNESS
❤️🔥 Max Heart Rate
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🎯 Target HR (70%)
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💪 HR Reserve (HRR)
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🧘 Zone (Karvonen)
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