Gil Fronsdal leads an Anapanasati Knowing the Breath. Your breathing has been your companion for your whole life. In all circumstances, it's there with you.
As long as you're alive, your breathing will be your companion. And when we're meditating on breathing, it's the time when we return the favor and we're become a companion to our breathing. And with our attention, we're accompanying the body breathing.
This doesn't have to be a complicated enterprise. Just to be willing to be present for a few minutes to your breathing, to attend to your breathing. And one way to do that is to allow how your body breathes. To show itself to you, so you become familiar to what it's like. What it feels like for the body to be breathing. And how the breathing shifts and changes depending on what's happening.
To be a companion to your breathing, is to notice what parts of your body are active as you breathe where there's movement or pressure or release of pressure. To notice where on the body there's sensations that come and go in the process of breathing.