The third trimester of pregnancy is an exciting time because soon your baby will be in your arms. However, many pregnant women say they feel more muscle tension and pain in the low back, and hips. Exercise routines usually have to be modified as the birth of your baby approaches. Prenatal yoga and swimming are excellent exercises for helping with muscle tension and pain. Plus swimming helps a pregnant woman to feel bouyant…which is a great feeling when your belly feels big! The most important thing is to listen to your body and get the rest you need.