A racing heart from anxiety is your body's fight-or-flight system doing its job — it's trying to protect you, not harm you.

You’re familiar with the feeling of your heart pounding in your chest, your blood pulsing through your veins with increasing ...

There are forearm-based heart rate monitors, wrist-based heart rate monitors, smartwatches, fitness trackers and even ...

Share on Pinterest A new study suggests that aerobic exercise may help reshape part of the body’s nervous system. Getty Images A rat study has found that aerobic exercise may reshape nerves that ...

Heart rate variability (HRV) typically increases with parasympathetic activation (rest-and-digest response) and decreases with sympathetic activation (fight-or-flight response). The autonomic nervous ...

Whatever your view of Cristiano Ronaldo’s contribution towards his nation’s tactical cohesion, there is little doubt that his physical profile defies his age. Pushing past the histrionics from the ...

For years, doctors have relied on familiar vital signs—heart rate, blood pressure, temperature and oxygen levels—to monitor someone's health. But researchers at the University of Missouri believe one ...

Discussing the pros and cons of hormonal birth control with your doctor can help inform your decision about which contraceptive method is best for you. New research suggests certain types of hormonal ...