According to Kundalini Yoga, they emphasize rapid breathing (breath of fire) during their asanas (also called kriyas). They state:
“According to the Kundalini Research Institute, breath of fire oxygenates and detoxifies your blood. Regular practice can build your lung capacity, clear your respiratory system, balance your sympathetic and parasympathetic nervous systems, heat your body to increase energy, boost your immune system, build concentration, reduce addictive impulses and improve your sense of well-being. Think of breath of fire as a tune-up for your system so all parts work harmoniously together.”
So, it is puzzling.
One school of thought (Desikachar) is that during asana only practice slow, calm breaths.
Another school states (Kundalini), practice rapid quick breaths during asana.