🔬 Health & Fitness Research
The Google Fitbit Air‘s optical sensor can’t track your heart rate accurately during workouts—it lags enough to throw off calorie estimates and interval feedback. For $100, you’re getting a reliable step counter with decent recovery tracking, not a real sports watch.
Marty’s Take:
The chest-strap framing buries the real story: every major wrist optical sensor—Fitbit Air, Apple Watch Series 10, Garmin Venu 3—drifts at high intensity. This isn’t a Fitbit failure; it’s a physics constraint baked into every optical HR platform on the market. If calorie precision under load actually matters to you, our best fitness tracker guide walks through which platforms complement a chest strap for serious sessions—because no $100 wrist tracker is solving optical latency.
Shop mentioned gear: Google Fitbit Air
Source: ZDNET
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