For the over 1 million Americans who survive severe traumatic brain injuries each year, the road to recovery is often long and challenging. Disruption of the autonomic nervous system, which controls ...

Brazilian researchers reveal that even mild cases of COVID-19 can temporarily reduce heart rate variability, with stress on the autonomic nervous system lasting up to six months—especially in older ...

From left, Manuel Hernandez, Ayse Dogan and Richard Sowers watch as graduate student Laila Shaaban walks on a treadmill while a “smart shirt” tracks electrical activity in her heart. In the background ...

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate. As a ...

FRIDAY, Oct. 10, 2025 (HealthDay News) -- Heart rate variability biofeedback (HRVB) can reduce negative affect, craving, and substance use among individuals in early recovery from substance use ...

What is heart rate variability (HRV)? As popular as the metaphor may be, a healthy heart doesn’t beat as regularly as a metronome. In fact, it changes its rhythm with each beat. Heart rate variability ...

These days, it may seem like there’s a million different data points that you’re supposed to keep track of—hello, steps, sleep, and recovery scores!—and it’s difficult to know which ones are worth ...