How Do You Measure Ventilation in Training?

The problem with ventilation, if we just dig into the weeds a little bit, is that unlike, or at least less so with heart rate. As soon as i start thinking about my breathing, i change it. At least at low intensity. Now that once we get at the higher intensity realms, then that's less true. But if i'm just sitting there peddling easy, and i start thinking and say, i'm going to count my breathing, it changes,. You know, just, you can't think about it without changing it. So when i put on the shirt, a wearable, and just stopped thinking about it, then i was getting different data. And another interesting thing