It is good to breathe but strangely we don’t always get it right! Physical and emotional stress can lead to shallow breathing, and even posture can restrict the filling of our upper lungs or the distension of our abdomen.
If you are a patient of mine I may have suggested some breathing exercises for you. Here are some useful links:
Pranayama breathing: https://www.youtube.com/watch?v=udLuhi5cktY
Kundalini yoga breathing: https://www.youtube.com/watch?v=e5tGCr22TlA