If you have an oaura ring you can participate in a USCF study that is trying to determine if it can help predict COVID: https://ouraring.com/ucsf-tempredict-stu

If you have an oaura ring you can participate in a USCF study that is trying to determine if it can help predict COVID: https://ouraring.com/ucsf-tempredict-study https://ouraring.com/ucsf-tempredict-study I think the idea is similar to what the NBA is doing: monitor doctors and nurses with the ring to try to detect COVID. But they are trying to properly study the idea.