It's pretty much exactly what it sounds like, yeah. [ She frowns, runs a hand across her face as she tries to figure out how to explain why it works. ] Breathing tends to be one of the biggest problems during a panic attack of any kind. If you've done a lot of regular breathing exercises, you can use that familiarity to force yourself into the zone of one of them and it can help snap you out a little bit. Give you a bit more control.