The Whoop rival tested.

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate.

You probably check your step count religiously, maybe glance at your heart rate during workouts, and might even pay attention to how many calories your fitness tracker claims you’ve burned. But ...

Oura’s newest wearable is a great alternative to watchlike fitness trackers ...

Fitness trackers, or general wearable devices, have become part and parcel of everyday life. Chances are you've got one or you're thinking of getting one for the first time. Either way, it's always a ...

A few of the most important insights are heart rate variability (HRV), which describes the difference in time between the ...

As wearable technology has grown more popular, it’s not just researchers and cardiologists who are paying attention to heart rate. You might be monitoring your own all day long via a fitness tracker ...

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 ...