Monitoring your body provides valuable information on your adaptation to training, your risk of injury or illness, and your readiness for the next hard training session. The right data can help ...

What Does a High Resting Heart Rate Mean? The ups and downs of HRV can be so tricky to navigate, in fact, that most doctors, even cardiologists, don’t factor it into treatment plans for their patients ...

Your heart beats around 100,000 times every day. Heart rate is a key marker of cardiovascular activity and an important vital sign. But your pulse is not as steady as a precision clock – nor would you ...

Wearables have been one of the hottest trends in fitness for years. Top brands like WHOOP, Oura, and Garmin promise smarter training and better readiness, but all that data can be overwhelming if you ...

Here are all the ways to find the right fitness wearable for you, and how to make the most of the data it can offer. This post is part of Find Your Fit Tech, Lifehacker's fitness wearables buying ...

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, ...

More recently, researchers have investigated how to use HRV in athletic training and prognosis of medical conditions. Several fitness wearables also report heart rate variability, either as a ...

Your heart beats around 100,000 times every day. Heart rate is a key marker of cardiovascular activity and an important vital sign. But your pulse is not as steady as a precision clock – nor would you ...