Reply To: I yawn and my eyes fill with tears when releasing a negative emotion

That's very common but not everyone does. People vary quite a lot. And individuals can react very differently depending upon what's being worked on. Ive seen very varied reactions whilst working with people in a therapy setting. 
The question is not so much whether that's normal but whether the tracks are working for you. As long as they are then you're doing it right. Well done!