How often do you blow chow in practice?

How often do you blow chow in practice? The only time I do is if I'm taking a breath, and someone kicks, forcing me to inhale too much water... (mostly during butterfly or the choice sets)

How often do you blow chow in practice? The only time I do is if I'm taking a breath, and someone kicks, forcing me to inhale too much water... (mostly during butterfly or the choice sets)