Which organ is associated with muscles?

The spleen is associated with muscles primarily through its role in the maintenance and production of blood, which is essential for muscle function. In traditional Chinese medicine, the spleen is thought to be integral in the production of qi (vital energy) and blood, which nourishes the muscles and supports their strength and endurance. A well-functioning spleen is believed to lead to robust muscles because it helps in transporting nutrients that are crucial for muscular health.

In contrast, while the heart is responsible for pumping blood, its direct association is more with circulation than with muscle itself. The lungs are primarily involved in respiration and gas exchange, contributing to overall energy levels but not directly related to muscle health. The kidneys play a role in fluid balance and filtration, and while they are important for overall health, they do not have a direct association with muscle function. Therefore, the spleen stands out as the organ most closely linked to muscle health and nourishment in the context of traditional concepts.