10 Medical analytical apparatus for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; medical diagnostic apparatus for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; medical devices for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; medical apparatus and instruments for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; analyzers for medical use, namely, analyzers for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; electronic analyzers for medical purposes, namely, electronic analyzers for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; medical instruments for recording physiological data, namely, medical instruments for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; physiological monitoring apparatus for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; physiological measuring apparatus for the purpose of analyzing breath and/or conducting cardiovascular, pulmonary, nutritional, metabolic and ergospirometry assessments; sensor apparatus for medical use in diagnosis of breathing, cardiovascular, pulmonary and metabolic disorders; Analytical apparatus for fitness, nutrition or weight loss assessment or guidance purposes; Diagnostic apparatus for fitness, nutrition or weight loss assessment or guidance purposes; biometric analytical apparatus, namely, flow sensors for medical use to be worn by a human to gather biometric data and also including oxygen and carbon dioxide sensors sold as a unit for fitness, nutrition or weight loss assessment or guidance purposes; biometric diagnostic apparatus, namely, flow sensors for medical use to be worn by a human to gather biometric data and also including oxygen and carbon dioxide sensors sold as a unit for fitness, nutrition or weight loss assessment or guidance purposes; Physiological monitoring apparatus for fitness, nutrition or weight loss assessment or guidance purposes; Physiological measuring apparatus for fitness, nutrition or weight loss assessment or guidance purposes; instruments for recording physiological data for fitness, nutrition or weight loss assessment or guidance purposes; Sensor apparatus for use in assessment of fitness, nutrition or weight loss; Electronic analyzers for use in assessment of fitness, nutrition or weight loss; Medical analytical apparatus for detecting the onset or deterioration of a disease