Again, this depends on the context. What kind of conversation are you having? Is it a more contentious topic? Or is someone sharing something personal with you? If you aren't having a friendly chat, it's better to keep some space between you. However, if it's something more intimate or personal, whoever is listening or talking to you might want to be closer to you.
Learn how to read your interlocutor and remember: don't make assumptions! You may be feeling comfortable, but they might not.
Source: Forbes, 2020.
Photo by Austin Distel on Unsplash
What about touching? Hugs, handshakes, and pats on the back are also part of body language, but do you know when they are appropriate in the workplace? Check this article to find out more about this: https://www.hrmonline.com.au/sexual-harassment/touching-at-work-how-far-too-far/.