I've experienced this for years. I've never thought anything of it, just thinking it was a perfectly normal bodily response. We tend to breath shallower when we're sitting, doing nothing, and so the body takes an extra deep breath occasionally to get the necessary oxygen that our shallow breathing isn't giving us. You could get your GP to check it out if you're feeling worried, to put your mind at rest.
Gooseberry crop has disappeared
AIBU To Be So Annoyed at the Stupidity of This
Father's Day Sunday — nobody makes cards for this type of dad
