Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings. When you purchase through links on our site, we may earn ...

Heart rate is one of the most basic and important indicators of health, providing a snapshot into a person’s physical activity, stress and anxiety, hydration level, and more. Traditionally, measuring ...

Healthy hearts are adaptable, and heartbeats exhibit complex variation as they adjust to tiny changes in the body and environment. Researchers have applied a new way to measure the complexity of pulse ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. You might have been tempted to get a smartwatch or a highly feature ...

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, ...

Understanding your heart rate can be helpful to calibrate your perceived exertion, especially on easy and steady runs. This ...

The business-focused HP Reverb G2 Omnicept will build out insights on behavior for training scenarios, and maybe even bring human emotions into VR. I started with CNET reviewing laptops in 2009. Now I ...

Active heart rate measures a person’s heart activity during exercise. People can use heart rate zones to optimize workouts by ensuring that the heart rate stays within the ideal range. A person can ...