Sometimes a hug is just a hug
Honestly, this is why I love that my T is DBT trained. We don't spend a great deal of time on minutiae (for me this is trivial - I know it may not be for others). The one time I've asked for a hug, I just... needed a hug. I think it's part of the human experience to have touch be part of our emotional and relational packages - how much will vary from person to person and where it comes from as well. I've worked with my T for six years and it took me that long to ask for a hug though truly it hadn't occurred to me until this last summer.
It did what I needed it to do. And that was that.