Sleepiness and fatigue in the morning may be related to physiological factors such as lack of sleep, or may be caused by sleep apnea, chronic fatigue syndrome and other reasons. 1. Physiological factors: when there is excessive late night, insufficient sleep, or due to poor mood, resulting in poor quality of sleep, resulting in the brain can not get enough rest, may cause morning sleepiness, fatigue. 2. Sleep apnea: patients with sleep apnea have low oxygen in the brain at night, so they are more likely to be sleepy in the morning, have no strength, and have drowsy brain. It is recommended to consult a doctor in time for treatment under the doctor’s guidance. 3. Chronic Fatigue Syndrome: This disease is usually caused by mental factors, endocrine metabolic dysfunction, immune dysfunction, etc., which can easily lead to sleep disorders in patients, which may result in morning sleepiness and fatigue, and may also be accompanied by muscle pain, fatigue and other manifestations. Sleepiness and fatigue in the morning may also be caused by other reasons, if accompanied by obvious discomfort, you should consult a doctor as soon as possible to give targeted treatment.