Health is a metaphor.

A healthy person must be a person who exercises regularly and accumulates bit by bit. Just like cultivating young trees, only by watering and fertilizing every day can they grow healthily; Just like building a house, only by laying a good foundation bit by bit will a tall building be built; It's like a drop of water wears away a stone. Only dripping water every day can penetrate the stone. We are like small trees, foundations and stones. As long as we persist in accumulation, we will grow healthily.