What's the relationship between nose breathing / mouth taping and blood pressure.?
In addition to this there is a release of hormones and chemicals that get triggered by nasal breathing that lower blood pressure and aid digestion amongst many other benefits. The thing is you don't have to make any really radical changes to get benefits but if you want to you can push things much further.Engages the diaphragm fully which on its travels tickles our internal organs which tell our parasympathetic nervous system everything is fonzy.
This book is brilliant : https://www.waterstones.com/book/breath/james-nestor/9780241289129