📊 1. How Accurately They Track Sleep ✔️ Sleep vs. Awake Many consumer sleep trackers (rings, watches, and sensors) can reasonably tell when you’re asleep vs. awake — often with ~80–90% agreement vs...

🧠 1. Tracking What Matters — Sleep Stages & Physiology Most modern gadgets first measure your body’s signals to understand your sleep patterns: 🧩 Key Metrics They Track How it helps:Tracking gives...

🧠 Wearables & Personal Trackers These devices monitor your sleep patterns, biometrics, and circadian rhythms to help you understand and optimize your rest: 🔹 Smart Sleep Rings Why rings? They’re...