Inclusion Criteria:  Male or female subjects ≥ 21 years of age at the time of signing the informed consent. Subjects willing to sign the informed consent and capable of committing to the duration of the study. Subjects with the ability to lie flat, lie on left side, lie on right side, and sit in a chair. Subjects who are able to breathe through their nose for the capnography assessment. Subjects that have a diagnosis of a cardiac, pulmonary, or cardio-pulmonary condition (e.g., Congestive Heart Failure, COPD, Asthma) will be assigned to Group 1. Subjects who are not known to have a cardiac, pulmonary, or cardio-pulmonary condition will be assigned to Group 2.  Exclusion Criteria:  Subjects who are prone to excessive coughing and excessive movement Subjects who have a condition that involves uncontrollable movement of the body such as Parkinson's Disease or Essential Tremor. Subjects with a history of allergy to adhesive, latex or Nuprep.