3 reviews
Continuous glucose monitors went prescription-free in 2024, and two options now dominate the non-diabetic market. We compare Dexcom Stelo and Abbott Lingo on published FDA accuracy data, wear time, and cost — and cover who a CGM actually helps if you don't have diabetes.
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Our sleep and HRV tracker review ruled out Whoop for overnight measurement accuracy — but strain and training load is a different job, and it's the one Whoop is built for. Here's how it stacks up against a GPS running watch for athletes who train by the numbers.
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Sleep tracking is only useful if the device measures what matters and presents it in a way you can act on. This review ranks the top options by HRV accuracy, sleep stage reliability, and the quality of recovery insights — not feature count.
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