This chapter provides detail description of exercise during pregnancy. Exercise during pregnancy, physiologic changes of pregnancy, impact of exercise on pregnancy, Kegel’s exercises, benefits of exercise, precautions, anaemia, contractions, low back pain, twin pregnancy, heart disease, contraindications to exercise during pregnancy, e.g. placenta previa, preterm labor, intrauterine growth retardation, multiple gestation, etc. are described in detail. 15 references are included at the end of the chapter to facilitate further reading.