We wake up and we are breathing... aaah a good thing :-D I have asthma and sometimes my breathing isn't so great. An attack happens when I do strenuous exercise. To prevent this I use my rescue inhaler about 15 minutes before exercising. I used my inhaler a lot on our walks on the trip we took out west last year. It made up hill walking a lot easier.
I try to do breathing exercises to help my breathing on a daily basis. This video is for menopause, but is the same exercise I do. It helps for panic / stress attacks too. Breathing correctly is important in physical exercise.... remember to breathe from the diaphragm and not the chest.
How to Do Breathing Exercises for Menopause