Whoop Life has a feature called Blood Pressure Insights that uses various bits of data—including heart rate, HRV, and blood flow patterns—to estimate your blood pressure. 2026, Ginny Graves, “The Most Important Health Metric You're Not Tracking”, in Men's Health, volume 41, number 2, page 18:
(abbreviation, alt-of, initialism, uncountable) Initialism of heat recovery ventilation.