ECG: What is it and why does it matter?

ECG: What is it and why does it matter?

You may have heard of the feature ECG — sometimes abbreviated as EKG — making its way onto wearables as of late. Devices like the Withings Move ECG, the Apple Watch Series 4, and the soon to be released Amazfit Verge 2 are just a few devices that sport the functionality.But what is ECG, and…