Tools that measure and record heart rate, aka pulse, continuously for at least an exercise session.
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Tools that measure and record heart rate, aka pulse, continuously for at least an exercise session. There are lots<ref>https://iotool.io/extensions/sensors/heart-rate-bluetooth-low-energy-4-0-sensors-1</ref> and lots of such devices and so not all have been evaluated.
=== Bands and Watches ===
=== Bands and Watches ===
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Wellue. [[User:DG|DG]] ([[User talk:DG|talk]]) not recommended.
Wellue. [[User:DG|DG]] ([[User talk:DG|talk]]) not recommended.
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biostrap 400$ two heart rate sensors and many others.