The word 保重 is formed by combining two meaningful characters: 保, which conveys the idea of protecting, preserving, or keeping safe, and 重, which signifies something heavy, substantial, or of great importance. Together, they create a conceptual whole meaning "to preserve what is weighty (i.e., one's health or well-being)". It is not a literal description but a metaphorical exhortation, originating from the idea that one should carefully guard their most vital and substantial asset, their own body and life, hence becoming a standard expression of concern meaning "take care" or "look after yourself".