Do you feel that you get winded easily when you swim?
Do you continuously exhale when you face is in the water?
Are you able to get oxygen in and out at a rate that sustains you for the distance that you’re endeavoring?
Do you depend on breathing to a single side?
Or maybe you count on breathing to both sides?
Are you able to move to a breathing position such that it doesn’t compromise your ability to be streamlined in the water?
All worthy experiments!