What about Polk City Company? Is it reliable?

Man is an animal, so he can't carry out photosynthesis. He must absorb energy from the outside to maintain his own growth and development. There is an old saying that "people are iron, rice is steel, and they are afraid not to eat when they are hungry", but eating is not only to fill their stomachs, but also to supply all kinds of energy needed by the body. People's activities are inseparable from this energy, just as cars can't run without gasoline. If people have no food, there will be no life activities. From childhood to adulthood, their bodies and tissues are growing. Therefore, people eat to fill their stomachs, which is only a superficial phenomenon. Eating is actually to maintain the normal activities of the human body and maintain people's life and health. Hope to adopt, thank you.