Sorry for seemingly bizarre or obvious question, how do you breathe when running? I have been listening to Denise Lewis on Couch to 5km and she says to breathe in through your nose and out through your mouth. I've always just breathed in and out through my mouth. I can do nose but it's harder if it's cold or signs of hayfever (nasal congestion).
My preferred method is to stick my tongue against the corner of my mouth and breathe hard 🤣
Does it make any difference?