@Irina K thank you so much, I really appreciate the encouragement. It's true, I also feel like I'm loosing air sometimes. One reason is because @Artur Willoński and I realized that some cardio exercise before the lesson is useful for me to be more high energy, so losing air might be a side effect. Another reason is that most times my nose tends to be kind of congested. In any case, whatever exercise you have in mind, I'd e very happy to learn more and see a demo. Let's schedule a call when you have the time.