IRCT20120923010913N2 IRCT 2024-01-27 Esfahan University of Medical Sciences pregnancy yoga Exercises and breastfeeding self-efficacy Investigating the effect of pregnancy yoga Exercises on breastfeeding self-efficacy in primiparous mothers referring to selected comprehensive health centers 2024-01-20 anticipated 90 Complete https://irct.ir/trial/74835 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Stratified random assignment based on education level into two groups The selection of samples will be based on the available method at first, and then they will be randomly divided into intervention and control groups and matched according to their education level. In order to assign samples in each group, they were asked to choose one of the sealed envelopes. Envelope number one is assigned to the control group and number 2 to the intervention group. Then, based on the education level of the mothers, sampling will continue until the level of education in the two groups is equal. ​. N/A breastfeeding self-efficacy. Intervention 1: Intervention group: Yoga sessions will be held in groups in selected centers, twice a week and for one hour each time from the 34th week of pregnancy to 8 weeks after delivery (12 sessions). Intervention 2: Control group: Samples in this group only receive routine pregnancy care in comprehensive health centers. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is It will be published only in the form of articles.