It’s just a virus, the ER told him. Days later, he was dead.

Sam updated his parents by text as he was leaving the hospital on Monday night. “Just a bad virus, will have to advil, vomit, ...
The Manual on MSN

Can you trust the heart rate data from your treadmill?

Are heart rate monitors on treadmills accurate? Keep reading to find out. The post Can you trust the heart rate data from ...
IEEE Spectrum on MSN

How Wi-Fi Signals Can Be Used to Detect Your Heartbeat

Wi-Fi signals today primarily transmit data. But these signals can also be used for other innovative purposes. For instance, one California-based team has proposed using ambient Wi-Fi signals to ...

What HRV Is, and Why Your Fitness Watch Measures It

Heart rate variability is one of the main things your smartwatch or fitness tracker measures. Here's what it means.