SPShradha Puriinfreecodecamp.org·5d ago · 9 min readHow GPS Works in Wearables (and Why It Kills Your Battery)A couple of months ago, I went for a 10K run with three different devices on me. Why? Another long story of review deadlines and my own procrastination. By the time I was done with my run and got back00
SPShradha Puriinfreecodecamp.org·Jul 20 · 7 min readHRV Data Is Everywhere. Here's What It Actually MeansHealth data is having a moment. Of all the metrics receiving the most developer interest at present, there’s nothing like heart rate variability (HRV). It’s a feature found on every major SDK for wear00
SPShradha Puriinfreecodecamp.org·Jun 30 · 10 min readWhy Different Wearables Report Different Heart RatesMy partner and I have this thing where we check at what time our heart rates drop to their lowest during sleep, even though we sleep almost at the same time for a similar duration. He's on a Garmin, w00
SPShradha Puriinfreecodecamp.org·Jun 23 · 8 min readSleep Tracking, Bluetooth Signals, and EMF: What Every Wearable User Should KnowYou take off your shoes before bed. You probably don't take off your smart ring or your watch. Most of us sleep with a Bluetooth-enabled device sitting a few millimeters from our skin, all night, ever00
SPShradha Puriinfreecodecamp.org·Jun 18 · 11 min readHow Wearables Track the Menstrual Cycle: The Sensors, the Algorithms, and the Accuracy GapYour Garmin shows poor recovery, WHOOP paints your day red, your resting heart rate is high, your HRV is low, and the app recommends that you rest. But here’s the thing: you don’t actually feel bad. F00