3. Joints soften. During the carrying of a child, the body is constantly in a state of restructuring, which allows the musculoskeletal system to adapt to the complex process of childbirth. The hormone relaxin already mentioned above begins to be actively produced, which is responsible for relaxing muscle tissue (prevents hypertension of the uterus), tendons, ligaments, and joints. This allows the pelvic bones to gradually diverge in the third trimester, expanding the birth canal and ensuring the movement of a large fetus along the birth canal.
READ MORE