Many studies demonstrate the benefits of yoga during pregnancy, from reducing time in labor to improving newborn outcomes. The American College of Obstetricians and Gynecologists states that modified yoga is one of the safest exercises for pregnant women. ACOG also cautions against specific poses and hot yoga. As with examining any activity, there is nuance to determining what activities are safe. There is research available on particular poses and practicing yoga in a heated environment. This article examines the evidence on prenatal yoga, physical changes that can affect your yoga practice and precautions, and tips to modify yoga during pregnancy.