Quote Originally Posted by JohnK View Post
I you haven`t already done so check out NASAL BREATHING:-

https://oxygenadvantage.com/nasal-breathing-running/

As opposed to mouth breathing, if you decide to try nasal breathing you will need to stick with it for a while and train your body to adapt and you will be training not just your body but your breathing also and it ain`t easy to change a lifetimes habit.

All the best
I've bought the book, John, i'm going to read the lot before implementing any training. I prefer it that way.