Amazfit Helio Strap update adds 51 workout modes and refines its VO2 Max algorithm in firmware 3.22.0.1, now rolling out ...

If your smartwatch comes with heart monitoring capabilities, it's either using an optical heart sensor or an ECG: here's what ...

For decades, pulse oximeters have been among medicine's most familiar instruments. Clip one onto a finger, and within seconds ...

Researchers have shown that measurements taken from a person's fingertip could help identify physical patterns associated with stress, anxiety and depression.

Anne Andrews (UCLA) explains how voltammetry and machine learning can track multiple neurotransmitters in real time, even ...