During pregnancy, oxygen and nutrients need to be supplied to the fetus through the umbilical cord, and the blood circulation of the fetus also passes through the mother. Therefore, the fetus grows slowly and the mother is prone to anemia. It is also because in this special period, the fetus needs part of the mother's blood. Because they also absorb iron in their mother's body, her mother is also prone to iron deficiency anemia. I remember that when I was pregnant for three months, I went to the community to check the ECG, and the result was myocardial ischemia.
Secondly, the fetus grows up slowly in the stomach, which will inevitably bring more pressure to the mother's heart, because it needs to provide oxygen to the child. Every breath of the child, every heartbeat of the child is giving the mother a greater burden. Just like a person skipping rope by himself, heartbeat is a rhythm. If he jumps rope with the baby on his back, his heart rate will definitely increase.
I think our hearts are actually able to withstand pressure, as long as you use them correctly. For example, it is hard to imagine that a person who is lazy to lie down or sit in the office all day will be a very healthy person. In fact, when I stay every day, I really have no burden in my heart, right? But the general problems are idle, busy and hard, but the body is not prone to problems.
If a person exercises and runs regularly, his heart rate will be lower, because he is healthy. Put some pressure on his heart properly, so that it can run better. No, no, you are a basket case. Now no one advocates doing nothing at home, even if they don't need to make money, but they are advocating exercise and healthy eating.
Pregnancy is such a time. Even if a pregnant woman doesn't exercise, the baby in her body makes her exercise passively, just like running every day, so she will be healthier.