Why is physicsl activity not recommended during the third trimester of pregnancy?

Exercises that are at risk of falling or colliding should be avoided during pregnancy, such as horse riding, skiing and judo. Diving may also not be a good thing, as the baby still has no protection against pressure change.  But exercises like yoga, is recommended to anytime of pregnancy.

Explanation:

   During pregnancy, there are women who dont do physical activity for fear of causing an abortion or harming the baby. However, physical exercises for pregnant women help strengthen muscles and promote numerous physical and psychological benefits.  Despite the good points, pregnancy is not a time for overeating - especially for women who were sedentary before getting pregnant. For each quarter, there are recommended activities that vary in frequency, duration, and intensity.

  In the third trimester, as the prospective mother will be bigger and heavier, she could feel more tired while exercising. Difficulty breathing and more go to bathroom are expected. Also, as the baby grows, the pressure against the stomach increases, which can cause heart burning.

the answer is b its not mature