when i was learning to play melodeon, i always found myself breathing in and out with the push & pull of the instrument and would become breathless - sometimes verging on hyperventilation

i think it was something to do with subconciously trying to sing the tunes

getting the hang of using the air button alleviated this problem

from speaaking with other squeezebox players, some report that it happened to them while learning, but others who've been playing for years say that they still do it