This is another one of those things that i don't think about a lot since it's a mystery for now, but we have two big clues in this.
The first is the body of Adam and Eve who were incorruptible but the most important clue which i consider more important is the body of Christ after resurrection who could travel through walls but also be able to eat our food.
That right there is a deep mystery for me but also something glorious which brings joy and hope.
So i'm thinking that our incorruptible bodies might have similar properties? Ultimately i don't know, but this is an educated guess based especially on the body of Christ.
I think you are quite right to say that such matters are a mystery and I think it was Immanuel Kant who said we humans are unable to imagine alternate reality or “categories” in detail. We seem limited to describing heaven and hell in earthly terms, including in the Bible.