According to the "Health Friend", soaking feet in hot water can indeed play a role in relaxing muscles and meridians and warming the whole body, but soaking for too long is harmful rather than beneficial, especially for the elderly.
Adhering to soaking feet in hot water can promote the circulation of vital energy and blood, unblock the meridians, dispel cold, relieve cold hands and feet, expand capillaries, and promote blood supply to the brain. If additives such as ginger slices and Sichuan pepper are added into the hot water, it will be more effective to dispel wind and cold.
But soaking feet in hot water is not suitable for all people...