by Douglas Quine, PhD
Many people today have wearable devices to monitor their exercise and heart rate such as FitBits and SmartWatches. Last spring, as I was traveling in Ireland, I developed a “chest cold” for two days and tested positive (lateral flow antigen test) for COVID-19. It was only a mild case, for which I gave credit to my COVID vaccinations.
My 10-day hotel quarantine provided time for personal reflection and research. I was interested to see on my FitBit that my normally low baseline heart rate was climbing daily on April 5 (first positive), April 6 (no test), April 7 (positive), and April 8 (positive) after which it declined from April 9 to April 13 as I tested positive daily and recovered. Having returned to baseline heart rate for a couple of days, I tested COVID negative on April 15th.