The ability to sleep can also be referred to as hypersomnia or narcolepsy, which is generally excessive daytime or nighttime sleepiness. It is usually common in elderly patients, where blood viscosity and insufficient blood volume lead to slow blood flow, and slow blood flow will lead to insufficient oxygen supply to the body’s tissues and organs. If the brain is not supplied with enough oxygen and is in a state of oxygen deprivation for a long time, the patient will show dizziness, lethargy, lighter sleep, and feel more tired and weak after sleep, and in the long run, memory loss and slow reaction will occur. Patients are advised to drink more water, eat more light food, and take oral lipid-lowering drugs or drugs to improve circulation if necessary. At the same time, patients can be given appropriate activities and are advised to perform regular exercises to promote blood circulation.