As long as we're on breathing, if you can work a rhythm, your exhales should be quicker maybe explosive is a good word, and shorter than your inhales. I would inhale for two strides then a deep, short exhale on the third. This way my exhale would be on a right stride then left, right left etc. It didn't take long for the rythm to be almost instinctive. One or two runs. I was told it helped get more oxygen in. I worked that pattern out for me but my running buddy had a different one.
Explosive, yes! I experienced that very thing on yesterday's run. I noticed because every out breath was accompanied by a cloud of vapour. In any case everything felt smooth and relaxed.