How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

[James] has been building a heart rate monitor using a very cool TI chip. He needed a way to test his device, and commercial ECG simulators, like all biotech devices, are absurdly expensive. [James] ...

I wear a chest strap heart rate monitor when running year round, because the native optical tracking on even the best sports watches is often unreliable. The wrist is a tough place to get an accurate ...