Alongside words, humans have a treasure trove of nonverbal tools to help express themselves. We chuckle, sigh and gasp to communicate our feelings without uttering a word. What has amazed researchers for ages is how we rarely stop to think about how we know which sound belongs in which situation.
Source: [Phys.org](https://phys.org/news/2026-10-laughter-reveal-unwritten-social-everyday.html)