Does relaxation breathing decrease oxygen levels in the blood?

Does relaxation breathing decrease oxygen levels in the blood?
In a word, no. It doesn't do much to increase it either though that doesn't seem to be a popular opinion around here. It happens to be the truth but sometimes misconceptions win out. What would "seem" to be truth, because it's more understandable than what really happens.
There are many complexities and variables that effect oxygenation in the human body. Books have been written on just that subject.
Just trust me on this one. No, it does not.
God bless.

---

Orignal From: Does relaxation breathing decrease oxygen levels in the blood?