UNDER CONSTRUCTION ;)
but if anything else, do yourself a favour and watch this two minute video about breathing correctly by Dr. Belisa Vranich: https://www.youtube.com/watch?v=ldNnKVGxabA
or for the time being read this:
https://functionalmedicinecoaching.org/blog/a-simple-guide-to-relaxation-through-breathing/
https://functionalmedicinecoaching.org/blog/a-simple-guide-to-relaxation-through-breathing/