Fitbit Versa 4 hits new record low on Amazon, just weeks before Black Friday.

After last year’s revamp, Fitbit has been slowly updating more and more of the mobile app, with Heart Rate stats being the latest redesign. There’s no change to the card in the Today tab, but the page ...

HRV is a relatively new metric that measures variations in your heartbeat. There’s no formal guidance on what an optimal HRV is. Your heart rate variability (HRV) is a measure of the difference ...

This article was originally featured on The Conversation. 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 ...

The Charge 5 is Fitbit’s most advanced fitness tracker to date. It brings some of the advanced sensor tech introduced in the Fitbit Sense to a more affordable wearable. This includes an EDA stress ...

It’s been known for decades that heart rate variability (HRV) during labor signals how a fetus is responding to stress. Lower HRV—a lower variation in heartbeats—is even a risk factor for sudden ...