Prenatal Yoga: A Mind-body Practice to Benefit Your Pregnancy For pregnant women seeking safe, evidence-informed mind–body practices, prenatal yoga has been studied for its potential benefits. In 2008, 66 pregnant women were randomized into two groups of 33. The experimental group underwent 6 one-hour classes of prenatal yoga, inclusive of asana (yoga poses), breathwork and meditation, from gestation weeks 26 – 37. This group was also practiced yoga at home 2 -3x a week,