When I'm cycling hard and I have to think about something like shifting or starting to go uphill and concentrating on that effort, I've noticed that I don't bre

When I'm cycling hard and I have to think about something like shifting or starting to go uphill and concentrating on that effort, I've noticed that I don't breath enough. I've also noticed that I breath differently standing up and sitting down. While sitting down, there is less room in my abdomen for my lungs to expand, and that leads to shallower breaths.