The Wearable Tech Podcast with Fexingo: Smartwatches, Fitness Trackers, and Health Devices

Episode 54 of The Wearable Tech Podcast dives into a quiet revolution in cardiac monitoring: continuous ECG patches that can detect atrial fibrillation days or even weeks before a symptomatic event. Lucas and Luna unpack a recent JAMA study showing that these adhesive patches, worn for up to 14 days, caught AFib in 10 percent of high-risk patients vs. just 2 percent with standard 24-hour Holter mo...

This episode explores how smart rings like the Oura Ring and Samsung Galaxy Ring are bringing continuous blood oxygen saturation (SpO2) monitoring to consumers. Lucas and Luna discuss how the technology works — using photoplethysmography and red/infrared LEDs — and why overnight tracking is more reliable than spot checks on wrist wearables. They dive into a specific study from the University of Ca...

In this episode, Lucas and Luna explore the emerging world of wearable foot pressure sensors—insoles and smart socks that map your gait in real time. They focus on a specific case: how the German startup DynaSole partnered with the University of Freiburg to collect 10,000 hours of running data, creating a predictive model that flags injury risk three weeks before pain appears. The hosts break down...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how a new generation of smart rings is being used to screen for sleep apnea—a condition affecting an estimated 30 million Americans. Unlike bulky CPAP machines or hospital sleep studies, these lightweight rings use photoplethysmography (PPG) and accelerometers to detect breathing pauses overnight. The hosts discuss a recent study...

Episode 50 of The Wearable Tech Podcast explores a new frontier: wearable cameras that continuously capture and analyze daily life. Lucas and Luna discuss the Narrative Clip's revival, the new Humane AI Pin's camera system, and how Microsoft's SenseCam project laid the groundwork. They examine privacy concerns, the shift from passive logging to active AI analysis, and whether 'life documentation'...

This episode explores how wearable stress sensors — using electrodermal activity and heart rate variability — are moving from research labs into corporate wellness programs. Lucas and Luna discuss the science behind continuous stress detection, the privacy trade-offs, and a case study of a Fortune 500 company that saw a 22% drop in short-term disability claims after deploying stress wearables. The...

Continuous glucose monitors, or CGMs, have been a game-changer for people with diabetes, but they're now moving into the broader wellness market. In this episode, Lucas and Luna explore how companies like Abbott and Dexcom are driving the expansion of wearable glucose sensing beyond insulin management. We look at the key numbers — including the rapid drop in sensor costs and the growing consumer d...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how implantable wearable devices are being used to restore the sense of touch for amputees and spinal cord injury patients. They focus on the work of the University of Chicago's neuroprosthetics lab, which has developed a tiny sensor array that interfaces directly with peripheral nerves. Lucas breaks down how the device works — a...

In this episode, Lucas and Luna explore how wearable sensors are being used to detect early signs of infections like COVID-19, flu, and even sepsis before symptoms appear. They focus on the groundbreaking study from Stanford University that used Oura Ring data to predict COVID-19 infections three days before symptoms, with 82% accuracy. The hosts discuss the specific biomarkers tracked—heart rate...

In this episode of The Wearable Tech Podcast, Lucas and Luna dive into the emerging world of wearable sweat sensors that go beyond hydration to detect biomarkers linked to early physical and mental fatigue. They explore a specific 2025 study from Stanford where a wrist-worn patch tracked cortisol, lactate, and sodium levels in real-time during high-intensity workouts and a 24-hour sleep deprivatio...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how sweat-based wearable sensors are moving from concept to commercial reality, offering real-time biomarker tracking without needles. They focus on the case of Eccrine Systems, a startup that developed a wearable sweat patch capable of measuring glucose, lactate, and electrolytes with lab-grade accuracy. The hosts discuss the en...

Lucas and Luna explore how true wireless earbuds are evolving from audio devices into continuous health monitors. They focus on the specific case of a current-generation earbud that tracks heart rate, body temperature, and even electroencephalogram signals through the ear canal. The conversation covers why the ear is an ideal spot for medical-grade biometric sensing, how earbud manufacturers are c...

Lucas and Luna explore how wearable sleep trackers are moving beyond simple sleep stage tracking to become clinical tools for insomnia treatment. They discuss the rise of cognitive behavioral therapy for insomnia (CBT-I) delivered via smartwatches and rings, the FDA clearance of a prescription digital therapeutic for chronic insomnia, and the data showing that wearable-guided sleep restriction the...

Smart scales have been around for years, but the latest generation of body composition wearables goes far beyond weight. In this episode, Lucas and Luna look at one specific device — the Withings Body Scan — and how it uses bioelectrical impedance to track visceral fat, muscle mass, and even vascular age. They discuss why body composition matters more than BMI, how the technology works, and whethe...

In Episode 40 of The Wearable Tech Podcast, Lucas and Luna dive into the emerging world of wearable sweat sensors. Unlike blood-based continuous glucose monitors or urine strips, sweat sensors analyze perspiration in real time to measure biomarkers like lactate, sodium, potassium, and even cortisol. The hosts explore the science behind enzymatic and impedance-based detection, spotlighting a key 20...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how wearable air quality sensors are giving individuals real-time data on pollutants like PM2.5 and VOCs. They focus on the Atmotube Pro, a pocket-sized sensor that measures particulate matter, volatile organic compounds, temperature, and humidity. Lucas explains how these devices differ from government monitors, which only measu...

Episode 38 of The Wearable Tech Podcast explores the emerging world of wearable hydration sensors — devices that track sweat rate, electrolyte loss, and hydration status in real time. Lucas and Luna examine how this technology is moving beyond elite sports into everyday fitness wearables. They look at the science behind sweat analysis, the key players like NIX and Lumen, and the challenges of accu...

In this episode, Lucas and Luna explore the rapidly growing market for wearable UV sensors — tiny devices that measure personal sun exposure in real time. They break down how a company called L'Oréal (yes, the beauty giant) launched the first wearable UV sensor, the My Skin Track UV, back in 2018, and how the technology has evolved since. Lucas shares data from a 2024 study in JAMA Dermatology sho...

This episode of The Wearable Tech Podcast explores the shift from spot-check blood pressure cuffs to continuous wearable monitors. Lucas and Luna discuss the technology behind the new wave of wrist-based and ring-based sensors that use pulse transit time and optical methods to track blood pressure throughout the day. They examine the clinical validation challenges, the FDA clearance process for de...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how wearable skin conductance sensors are being used to detect epileptic seizures in real time. They focus on the Empatica Embrace, a FDA-cleared smartwatch that measures electrodermal activity to alert caregivers. Lucas explains the science behind sweat gland activation during seizures, citing a 2023 study showing 94% sensitivit...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how wrist-based temperature sensors in smartwatches and fitness trackers are becoming a reliable method for predicting ovulation. They discuss the science of skin temperature tracking, the accuracy compared to traditional basal body temperature methods, and how companies like Apple and Oura are integrating this feature. Lucas exp...

Lucas and Luna explore how wearable ECG patches are detecting arrhythmias that standard checkups miss. They discuss the landmark Apple Heart Study that screened over 400,000 participants, the shift from 24-hour Holter monitors to 14-day continuous patches, and real-world cases where a patch caught atrial fibrillation in people with zero symptoms. They also unpack the regulatory landscape—how the F...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how continuous body temperature monitoring is moving beyond fever detection to become an early-warning system for illness. They break down the science behind a new generation of smart rings and armband sensors that track baseline temperature shifts of just 0.1 degrees Celsius. Using data from a recent Stanford study on 1,200 part...

In this episode of The Wearable Tech Podcast, Lucas and Luna explore how wearable skin sensors are revolutionizing dermatology and skincare. They dive into the technology behind adhesive patches that measure skin hydration, UV exposure, pH levels, and even detect early signs of skin cancer. The hosts discuss a landmark study from Stanford University where a flexible sensor array successfully disti...

Lucas and Luna explore the rise of wearable smart rings, focusing on how these tiny form factors are challenging wrist-based devices for core health metrics like sleep tracking, heart rate, and SpO2. They break down the technology behind photoplethysmography (PPG) in a ring, compare battery life trade-offs, and discuss the competitive landscape including Oura and Samsung's Galaxy Ring. Specific da...