One of the benefits: add half a spoonful of salt to half a basin of warm water before going to bed, the water temperature can be higher, and then soak your feet for ten minutes. However, if you have a wound on your foot, you should postpone washing your feet with salt water. Another advantage: modern medicine believes that your feet are far from your heart and have little blood supply. Often washing feet with salt water and massaging Yongquan point can improve local blood circulation and promote metabolism.