If you’re curious about what happens while you sleep—or if you often wake up wondering, “Why am I so tired?”—a wearable sleep tracker might be for you.
No commercially available sleep tracker can perfectly analyze your sleep or diagnose a sleep disorder; you need to visit a sleep lab for that. But the better trackers can identify trends in your sleep, monitor your activity and heart rate, and give advice on improving your rest and fitness.
After testing five wearable sleep trackers, we’ve found that the Oura Ring and the Whoop 4.0 offer the best combination of accuracy, user experience, and comfort.
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