The majority of the benefits of exercise during pregnancy occur in the ; the majority of the risks of exercise during pregnancy apply to the .

mother, fetus

Explanation:

There are many benefits associated with exercise to the mother this includes the reduction in back pain, it helps in constipation, promotes healthy weight, improves the fitness of mother and strengthen the heart and also improves the blood vessels by preventing the deposition of fat in them.

There are majority of risks associated with the fetus during pregnancy these includes the premature contraction of the uterus, premature labor and premature birth of the fetus. The overexercise done by mother is likely to affect the growth of the fetus.