In my yoga classes I have always tried to incorporate some mindfulness exercises; sometimes in the beginning, sometimes in the end or even both. Savasana is always a good time to bring them back to the present moment as the mind keeps working, essentially doing its job. Nowadays I also do it in the middle of class, when I sense there is some opening for a short lesson on mindfulness or for introducing some mindful technique while performing a yoga pose. Depending on how open the students are at that moment, they will absorb the new skill right there. If they are not, they might remember what was said in a pose later when it comes to mind or they decide to show someone else (parents in case of little kids) that pose.
The way mindfulness gets explained needs to be tailored to different age groups. Of course I would not talk about the prefrontal cortex or amygdala in the middle of a yoga class, even for adults (I try to keep them present and I believe those words could be an invitation for people to zone out!), but examples according to the students’ ages can be presented and made easy to understand or recreate. Like the yoga poses, as a teacher, we need to drop any expectations that all the students will get it on the first, second or hundredth time… Our job is to present the lesson, and the students take what they are ready for.
I taught a yoga class at an Elementary school on the other day and, toward the end of class, while they were lying on their backs for a pose, I asked them to look at the ceiling and notice new things they had not seen before. We sat down and shared what they noticed. When performing the pose on the second side, I asked them to look at the ceiling again, notice what their friends shared and maybe even notice other things no one had mentioned. We then sat and shared some more, giving a chance to those who did not share anything on the first side. Of course, about two of them never shared anything because they were distracted with their hair or looking at their neighbor during that time. For adults, I tend to ask them to focus on feelings and sensations in their bodies while in the poses. For teenagers, I would recommend something in between the two examples I just mentioned.
I came across an article today and thought it was worth mentioning here. Check out item #4 suggesting to drop the expectations, just like I mentioned in the second paragraph above. This article is geared toward parents, but I believe it can help kids yoga instructors get an idea or two on how to implement mindfulness in their classes. http://www.huffingtonpost.com/monisha-vasa/teaching-kids-mindfulness_b_6458950.html