In 2015, the Finnish start-up Oura Health Oy (Oura) launched the Oura Ring, a sleek, sensor-packed wearable marketed for rest and recovery. Unlike Fitbit or Apple Watch, which stressed steps and calories, Oura focused on sleep, heart rate variability, and readiness. Early adoption by biohackers and athletes, visibility in the National Basketball Association, and a Gucci collaboration gave it credibility across wellness, sports, and fashion. By 2024, .....more