title: Systematic changes in levels of physiological activity during a four-month period.
mesh_terms: D000222:Adaptation, Physiological; D001774:Blood Chemical Analysis; D001794:Blood Pressure; D001831:Body Temperature; D005712:Galvanic Skin Response; D006339:Heart Rate; D006801:Humans; D008297:Male; D010507:Periodicity; D010551:Personality; D011594:Psychometrics; D011603:Psychophysiology; D012119:Respiration; D012463:Saliva / Q000032:analysis; D012879:Skin Physiological Phenomena; D014556:Urine / Q000032:analysis