![Heart Rate Variability Tracking without a Wearable [video]](https://i0.wp.com/healthtechinsider.com/wp-content/uploads/sites/9/2017/09/CorSense-Handheld-HRV-with-video-600x275-1.png?resize=600%2C275)
by Bruce Brown | September 29, 2017 | General News, Health
Heart rate variability (HRV) is a versatile and powerful biometric. Wearable health tech companies rushed to create HRV monitors in many form factors. We wrote about Emfit Limited’s Emfit QS that unrolls and claims to measure HRV accurately through your mattress while...
