On the flip side, a low HRV — less variation between beats — can indicate your body is stuck in “fight-or-flight” mode. That ...

New VO₂ Testing Insights Suggest Popular Fitness Metrics May Be Leading to Ineffective and Counterproductive Workouts ...

Experts who spoke to GQ broke down the mechanisms behind this type of training and why pretty much any guy stands to benefit ...

VO2 max is an intimidating word for an easy-to-understand biometric: It’s how well your body uses oxygen when you push ...

Please provide your email address to receive an email when new articles are posted on . GLP-1s show benefit in patients with HF, regardless of obesity. GLP-1s raise heart rate, which is linked to ...

Regulating your breathing can help lower your heart rate while running. Staying hydrated helps to keep your heart rate lower during exercise. Avoiding stimulants like caffeine can prevent an increase ...

This article was made possible by the support of Yakult and produced independently by Scientific American’s board of editors. Earlier this year I got an Oura ring to track the state of my health. Soon ...

To live is to have a heartbeat, which is why it makes sense for us living things to have a good understanding of our ticker. It’s well-known science that our hearts beat faster when we exercise and ...

Heart rate variability (HRV) evaluates autonomic nervous system (ANS) function, and in disease conditions a reduction in HRV is associated with inflammation. We hypothesized an association between HRV ...