That's what I love about the vest, you can change those settings. I personally have mine at 10Hz for 10 minutes, pause for suctioning or coughing then resume at a highter frequency at 14 Hz for another 10 minutes. I think it works great, it also has a pressure setting. I have the regular vest, not the full...so settings may be different with the folks who have a full vest. I do my treatments twice a day, more if I know I am sick... My pressure setting is set at 2 (goes up to 6, usually used with those who have the full vest from what I was taught). I just got my vest a month ago and already notice a difference, I have much better clearance with my junk from my lungs...the docs are hoping that it will decrease my infections and make me feel better in general. I don't know about you guys, but when that stuff just sits in your llungs, it causes pain where the mucus plugs (sorry so gross). I do feel better..now if they could find better gizmos for the sinuses, I would be a very happy camper. I read on another board that someone was using tobra to irrigate their sinuses...anyone do that here? And if they do, does it work? My ENT considers me a high risk, does not want surgery at all unless I am dying in pain or have a very severe case of sinusitis. Sorry I got off topic, but I was thinking of it as I just visited my ENT doc today. Hope I have helped.....Jenn <img src="i/expressions/face-icon-small-smile.gif" border="0">