You don't need a 60-minute session to use the breath. Here are three small practices to take into your day.
1. The physiological sigh
Two inhales through the nose (a small one, then a top-up), and one long exhale through the mouth. Two or three rounds is enough to drop a notch of stress.
2. Box breathing
In for 4, hold for 4, out for 4, hold for 4. A quiet anchor between meetings.
3. One long exhale
When everything feels too much: one slow, long, audible exhale. Reset. Begin again.