Teaching yoga is a great way to stay present. It's its own practice, just like being in the mat in the poses is a practice, leading a group in yoga practice is a practice too.
When I'm teaching I'm often get distracted but I have to come right back to the present moment or else I'd fall off the edge. So even though I can go off in my mind a little bit, it's only a very little bit or else I couldn't carry the class. The work that it takes to keep coming back, to know which side we're on, which pose we're doing, what time it is, and all of that, keeps me focused on the present moment. And that is such a gift. Having a practice that brings me present is my present!