The aim of this study is to identify evaluate the effectiveness of stretching exercises of Hatha Yoga method in pregnant women with back pain and posterior pelvic City Paulínia. -There will be a randomized clinical trial with 60 pregnant women with these symptoms. They will be randomly divided into 2 groups. The group A will perform the exercises of Hatha Yoga for ten weeks, once a week group B postural follow the guidelines recommended for the treatment of these pains, for ten weeks. Will be used as a technique for evaluating the Visual Analogue Scale to measure pain intensity and confirmation tests of the lumbar and posterior pelvic pain in order to differentiate them. A descriptive statistical analysis of univariate and bivariate distributions will be made through frequency and graphical representation. The association between the variables will be tested by statistical tests: [chi-square (X ²)], Fisher's exact test, Student's t test or Mann-Whitney, [Student's t test to compare means], ANOVA for the analysis of effects between the groups. [The significance level is predetermined to 5%]. The data will be analyzed in EPI-INFO 2000. SAS 9.0 and from the database created .