We may be able to tell someone’s heart rate just by looking at them

Researchers asked volunteers to match an on-screen heart rate to videos of people’s faces, and the participants were able to guess better than chance. It could be that this ability helps us judge other people’s emotions

Source:
https://www.newscientist.com/article/2255776-we-may-be-able-to-tell-someones-heart-rate-just-by-looking-at-them/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home