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Why does HRM-Dual consistently shows *very* high HR (170+) during first 6-8 min of warmup during runs? Is this a fit issue? Don't feel like I've maxed out my HR; not gasping
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Amazon.com: Garmin Fenix 7X Sapphire Solar, with Solar Charging Capabilities, with GPS, Touchscreen, Carbon Gray DLC Titanium with Black Band & HRM-Pro, Premium Heart Rate Monitor Chest Strap, Black : Electronics
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