The common cause of these symptoms of headache, sleepiness and lack of energy is insufficient blood supply to the brain, which is caused by two aspects. The first aspect, cerebral atherosclerosis, patients with increasing age will thicken the vessel wall, the vessel cavity will become narrow, blood flow into the narrow vessel cavity will appear the phenomenon of insufficient blood supply to the brain; the second aspect, changes in blood composition, blood lipid increase or red blood cell increase, as well as increased fibrinogen content in the blood, will lead to increased blood viscosity, blood flow resistance will increase, blood flow resistance patients will appear slow blood flow, blood flow resistance will increase. The resistance to blood flow will increase, and patients with increased resistance to blood flow will experience slow blood flow, resulting in symptoms of inadequate blood supply to the brain.