Someone arriving on the scene of an injured individual might try to remember how to administer CPR, knowing that techniques ...

Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and recovery. Higher HRV indicates well-being, while lower HRV signals stress.

Subjective sleep efficiency and sleep disturbance are associated with cardiovascular risk in patients with sleep-disordered breathing without obesity.

Past studies in animals have shown that a highly processed diet is linked to memory problems and inflammation in the aged ...

At its core, looking at your HRV trend over time gives runners a window into how well they’re balancing training stress with recovery. “Higher HRV is synonymous with having a very healthy nervous ...

Multispecies justice”—quite a mouthful, I know. I remember the first time I heard about it: I was freezing, sitting in my 19th-century classroom, which always managed to maintain a subzero temperature ...

Is stress worse in older adults? Here's what the research says and what you can do to manage your stress levels.

The fear of public speaking is normal, and it has a name: glossophobia. It consistently ranks as one of the biggest fears that people experience today, ...

Recent research suggests that the way a person breathes does more than simply sustain life. Respiratory patterns may actually ...

Heart rate variability can reveal how well runners are recovering – here, a cardiologist explains how to use HRV without ...

A figure skater shares what happened during "Quad God" Ilia Malinin's disastrous Olympic freeskate.

Like many Americans, I know I need more sleep. I'm a night owl, often writing late into the night, but also a mom who gets up early with her kids. The result: I'm not getting enough rest.