I've been testing wearables for years, and I've always been fascinated by the mountain of data they collect. Heart rate, blood oxygen, sleep stages—the sensors keep getting better, but here's what caught my attention: Apple just dropped research suggesting that how you move, sleep, and live might be more telling than any biometric reading your watch can take. This isn't just another incremental sensor upgrade—it's a fundamental shift in how we understand health monitoring. What you need t...
