Knowing your maximum heart rate can be useful when planning exercise. Workouts in lower “zones”, defined as up to 70% of maximum heart rate, improve aerobic capacity. More intense exercise trains ...

Cardiologists and athletes often monitor heartbeats as a way to gauge health or fitness. But the most popular formula used to calculate maximum heart rate is inaccurate for women because it's based on ...

Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and ...

If you’ve ever worried about your heart rate during exercise being too high or too low, you’ll want to read this. Your "heart rate zones" might be completely wrong. Not only are zones defined ...

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

Carley is a writer, editor and social media professional. Before starting at Forbes Health, she wrote for Sleepopolis and interned at PBS and Nickelodeon. She's a certified sleep science coach and ...