Systems for scientific research and non-medical monitoring comprising gas flow meters and gas flow monitors in the nature of sensors and pumps for measuring and delivering air and used to observe and measure a live subject's energy expenditure and metabolic rate, namely, metabolic analyzers for non-medical purposes, gas flow meters and gas flow monitors in the nature of sensors and pumps for measuring oxygen and carbon dioxide; portable respirometry devices for measuring carbon dioxide and oxygen levels in air for use in observing and measuring metabolic rate for non-medical scientific research purposes; metabolic and behavior management systems for scientific and clinical research purposes, namely, including instruments for analyzing air; instruments for measuring a live subject's energy expenditure and metabolic rate for scientific research purposes, namely, air analyzers for measuring oxygen and carbon dioxide levels in air for use in non-medical research and analysis, and instruction manuals packaged therewith, sold as a unit; metabolic analyzers for non-medical purposes; hypobaric oxygen chambers for non-medical purposes; Metabolic measurement systems for scientific research and non-medical monitoring purposes for facilitating the analysis of live subjects for non-medical or non-veterinary uses; Metabolic analyzers in the nature of monitoring apparatus and instruments for scientific research and non-medical monitoring purposes for use in the measurement, monitoring and analysis of metabolic activity in humans and in animals, comprised primarily of hypobaric oxygen chambers, and hyperbaric oxygen chambers; carbon isotope analyzers, gas flow analyzers, and gas flow monitors in the nature of sensors and pumps for measuring and delivering air in an uncontrolled remote, field, home or workplace environment, or, in a controlled environmental condition, all of the foregoing for non-medical or non-veterinary use; hyperbaric oxygen chambers for non-medical or non-veterinary purposes in the nature of a laboratory equipment system comprised primarily of full body or partial body animal and human respiratory masks, animal cages, and chambers in the nature of clear animal cages or tents constructed of clear see-through plastic in order maintain visual contact with the subject and to control environmental conditions within the chamber, and support racks, all for use in non-medical research and analysis of live subjects, and instruction manuals packaged therewith, sold as a unit