#sleep-tracking
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Garmin CIRQA Ultimate Scientific Review!
Rob (The Quantified Scientist) systematically tested the Garmin CIRQA smart band against a Polar H10 ECG chest strap (exercise HR) and a ZMax EEG headband (sleep stages), worn both on the wrist and on the biceps — placement turns out to be the single biggest factor in this review.
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Garmin Cirqa In-Depth Review: Reality vs Expectations
DC Rainmaker (Ray) reviews the $199 Garmin CIRQA screenless band after weeks of testing (himself and his wife) across running, cycling, swimming, hot and cold weather — framing everything as "reality vs expectations" set by Whoop, Fitbit Air, Amazfit Helio, and Polar Loop.