Two to three hours before going to bed. Two to three hours before going to bed is the best time to recuperate and rest. Before going to bed, the heat energy of the bian-stone mattress is transmitted to all tissues and organs of the whole body, and the thermal effect of bian-stone can be fully exerted to dilate blood vessels and unblock blood, which can effectively relieve people's fatigue, because the electric bian-stone mattress is based on the hot moxibustion therapy of traditional Chinese medicine and uses the warm effect to carry out health care and physical therapy on the human body.