The purpose of the random group experimental study was to find out the effects of Yogic practices on psychological variable such as Stress in Prenatal women. 60 Prenatal women of second trimester came forward from Bengaluru city, 45 were screened and 30 were selected at random by means of Random sampling method between 25 years to 35 years of age and they were divided into 2 groups namely experimental group (Group A) and control group (Group B) with 15 subjects respectively. It was hypothesized that there would be significant differences on psychological variable - Stress due to Yogic practices among the Prenatal women. Preliminary test was taken for two groups on Stress before the start of the training program. The 12 weeks was divided in to III quarters, I quarter was 1-4 weeks which consisted of 40 minutes of Yogic practices, the II quarter for 50 minutes of Yogic practices and the final quarter for 60 minutes. Group A was given Yogic practices for 5 days a week for a period of 12 weeks (3 quarter). Group B carried out with their daily routine. After the experimental period of 12 weeks, the 2 groups were retested again on the same selected dependent variables. Analysis Of Co-Variance (ANCOVA) was used to find out the significant differences between the experimental group and control group. The results of the study proved that the experimental group showed significant differences on Stress (Decreased) than the control group due to Yogic practices among Prenatal women. The hypothesis which was fixed at 0.05 level of confidence was accepted. Hence it is established that Yogic practices are constructive to the Prenatal women to preserve Stress throughout pregnancy.