The fastest way to reduce stress (B2)

Questions

1. What percentage of people breathe incorrectly?
2. What happens to your heart rate when you breathe out?
3. Which neurotransmitter is increased by slow breathing?
4. What type of breathing performed best in the study on emotional regulation?
5. Why is nose breathing generally better than mouth breathing?
6. How can breath work affect blood pressure?
7. What is the fastest breathing technique to reduce stress called?