I work in technology with application developers daily. For the first time one of my teams has a majority women on it. This is very unusual in my field which typically has a lot of men in it.

In conversation with me they are constantly touching my arms. I have one peer of mine who walks so close to me she practically runs into me while we walk and talk. There are times where I want to tell her, "could you back up about a foot?" I mean shoulder to shoulder the whole time. I'm not used to this as my previous teams were mostly men, and they never did this. I'm assuming all this means is that they are comfortable around me? Is this just a thing women do in casual conversation at work or generally? I don't think it is weird per se, I'm just used to having a personal bubble. Now that bubble is constantly being invaded.