Here is a chart Ive been wanting to create for some time now. I am an avid meditator and deep breathing enthusiast and have often wanted to have a resource where I could quickly and efficiently find various breathing techniques and select one that I want to try and know how it may work without all the woo, ads, tracking, and other bs. Please note that you should talk to your doctor before trying any of these techniques if you have any health issues or heart conditions. I have also supplied my notes document and spreadsheet links that I will continually try and update as I come across new techniques and get feedback from my readers.
Here is a Breathing Techniques google doc that I have created to take notes on and track all the various techniques that I have found across the internet. Please let me know if I have left any out. I have noted when I added the resource with a date and have tried to supply the originating source URL that I copied the directions from.