The purpose of study was to find out the individual and combined effects of suryanamskar and pranayama practices on flexibility of school boys. To achieve this purpose of the study, forty school boy’s students from Alagappa Physical Fitness Academy, Karaikudi, were randomly selected as subjects. The age of the subjects ranged between 11 and 13 years. The study was formulated as pre and post-test random group design, in which forty subjects were divided into four equal groups. The experimental group-1 (n=10, SNP) underwent suryanamaskar practices, the experimental group-2 (n=10, PP) underwent pranayama practices, the experimental group-3 (n=10, SNP+PP) underwent combined practice of suryanamaskar and pranayama and group 4 served as control group (n=10, CG) did not undergo any specific training. In this study, three training programme were adopted as independent variable, i.e., suryanamaskar practices, pranayama practices and combined practice of suryanamaskar and pranayama. The flexibility was selected as dependent variables and the measurement was recorded in Centimetres. The selected three treatments were performed five days in a week for the period of six weeks, as per the stipulated training program. The selected flexibility was collected before and after the training period. The collected pre and post data was critically analysed with apt statistical tool of one-way analysis of co-variance, for observed the significant adjusted post-test mean difference of three groups. The Scheffe’s post hoc test was used to find out pair-wise comparisons between groups. To test the hypothesis 0.05 level of significant was fixed in this study.