The primary objective of the study is to compare the minute ventilation (MV), tidal volume (TV) and respiratory rate (RR) measurements collected and reported by the ExSpiron, without prior ExSpiron calibration, against acquired MV, TV, and RR measurements from an ExSpiron with prior individual specific calibration to a spirometer using either a Wright Spirometer or a Morgan Flow Volume Loop (FVL) Pneumotachograph Spirometer. A secondary objective will be to confirm the PadSet functionality after 24 hours of wear in accordance with current labeling.