Summary: Did you know? Fetal brain development will go through three peak periods. If you can seize these three golden periods and supplement them with complementary foods, your baby will be smarter. So, what are these three periods? After being upgraded to expectant mothers, expectant mothers began to supplement various pregnancy knowledge, and became cautious in life, paying attention to diet, prenatal education, and moderate exercise, hoping to give birth to a healthy, lively, and smart baby. But you know what? Fetal brain development will go through three peak periods. If you can seize these three golden periods and supplement them with complementary foods, your baby will be smarter. So, what are these three periods?