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Heart rate doesn't record accurately on some activities - fēnix 5 series - Wearables - Garmin Forums
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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 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](https://preview.redd.it/why-does-hrm-dual-consistently-shows-very-high-hr-170-v0-18ntntgnvi791.jpg?width=640&crop=smart&auto=webp&s=9fc883a0a257f2a333c9f47394b7c35653a5df61)