A smartwatch can tell you that your resting heart rate has increased, your heart rate variability has dropped and your sleep was shorter than usual. Based on these measurements, it might assign you a low readiness score and suggest taking it easy. Bu...

A smartwatch can measure your heart rate, a smart ring can track changes in skin temperature and a fitness band can monitor sleep throughout the night. But collecting these measurements is only part of the job. The more difficult task is understandin...

A few years back, a friend of mine kept getting these odd nudges from her Oura app. Nothing dramatic, just a note that her resting heart rate was a bit higher than usual and her sleep looked off. She felt fine. Two days later she was down with a feve...

Every second, a wearable is collecting information from your body. It may be watching changes in blood flow, movement, electrical activity, skin conductance or temperature. A few seconds later, that information can appear on the screen as something m...

Not too long ago, wearable devices were mainly used to count steps and estimate calories burned. Today, they can monitor your heart rhythm, analyze your sleep, track stress levels and even detect early signs of potential health issues. The biggest r...

Let's be honest, the Apple Watch stopped being “just a watch” a long time ago. At this point, it has morphed into a medical device that measures the vital signs and also keeps track of time and helps users pay for their oat milk matcha latte. But App...

The first generation of wearables had one main job: count steps. Today, smartwatches, fitness bands and even smart rings track heart rate, sleep quality, stress levels, temperature changes, blood oxygen, workouts and more. But collecting data is no l...

Modern wearables can measure almost everything. A smartwatch or smart ring can track your heart rate, sleep architecture, skin temperature, movement and blood oxygen levels with remarkable precision. Sensors are becoming more accurate every year and ...

A few years ago, fitness trackers were the simple gadgets that counted steps and buzzed when you sat for too long. Today, they do much more. Smartwatches now track your sleep, stress levels, heart rate variability, recovery, oxygen levels, calories b...

There are times when you wake up feeling refreshed. The sun is peeking through the window curtains and your mind feels fresh. But before you swing your legs out of bed, you check your wrist. Your sleep score is a 62. Suddenly, that phantom energy van...

Think about it, you wear your smartwatch or fitness band and never think about it again for several days. You don’t have to remember to charge your gadget every night, nor get notifications about its lack of battery when you go jogging or during your...