OK, I'm stranded on a desert island, or quarantined, with 5 books on breath. Here are mine!
1. The Way of Qi-Gong by Kenneth S. Cohen
2. Science of Breath by Swami Rama
3. The Way Of the Ice Man by Wim Hof
4. Tai-Chi Chuan and Meditation by Da Liu
5. Breatheology by Stig Severinson