VO2 max is an important measure of aerobic conditioning, whether you’re an Olympian or just a person hoping to stay healthy ...

The essays in a new anthology offer two distinct ways of interpreting the Promethean legacy of scientific progress.

Learn more about this metric and the best training sessions to add to your schedule to boost your cardio fitness.

New research on heart rate variability suggests that composure isn’t a personality trait. It’s a physiological skill the nervous system can train—one that may determine who thrives when the stakes are ...