Udupa, K NSingh, R HYadav, R A1973-02-012009-05-271973-02-012009-05-271973-02-01Udupa KN, Singh RH, Yadav RA. Certain studies on psychological and biochemical responses to the practice in Hatha Yoga in young normal volunteers. Indian Journal of Medical Research. 1973 Feb; 61(2): 237-44http://imsear.searo.who.int/handle/123456789/21707engAcetylcholine --bloodAdultCholinesterases --bloodHumansMalePsychological TestsTime FactorsYogaCertain studies on psychological and biochemical responses to the practice in Hatha Yoga in young normal volunteers.Journal Article