Exercise during pregnancy: current state of the art.

Women should be encouraged to become fit before they become pregnant. During pregnancy, those who were accustomed to aerobic exercise before pregnancy can probably continue their sports involvement throughout pregnancy, at the same perceived level of exertion. Weight training and calisthenics are advisable during pregnancy, even for those who never practised them before. Pregnant women should avoid high intensity, prolonged duration, hyperthermia, dehydration, abdominal trauma, and low oxygen availability in exercise.