Counting your steps and even your heart rate are features that are available in several of the most popular fitness trackers that are currently on the market. But does tracking your daily steps and heart rate really give you an accurate picture of how healthy you are? They obviously provide important data, but the Zoom HRV from LifeTrak is a fitness wearable that also tracks heart rate variability. What is that?
HRV measures the time interval between heartbeats. That’s different from the heart rate monitoring on traditional wearables, which measure the average number of heartbeats per minute.
This video explains it better.