I had the privilege to talk to Breathing Expert Tim van der Vliet on lifeshot! It was a great talk as I am super passionate about breathing techniques and exercises ever since I discovered the Wim Hof Method almost 2 years ago.
Check out Tim and Wim Hof doing a video together here https://www.youtube.com/watch?v=U-4qfTtOb8s
His website is here for enquiries into coaching and counselling timvandervliet
You can also find Tim on the Wim Hof Instructors page here