The human body at different ages requires different sleep time, such as newborn babies, most of them are in a sleep state, the length of sleep in a day can be up to 20-22 hours, childhood needs 12 hours, adolescents correspondingly reduced, in 8-9 hours, to adulthood needs 6-8 hours. If a long time to sleep more than 10 hours, may cause the following effects: 1, sleep rhythm disorders: the body has a normal circadian pattern, a long time to sleep more than 10 hours, resulting in a long daytime sleep, but lead to the night is not easy to fall asleep, appear late to sleep, but also on the normal life of the impact; 2, the body is weakened: the human body activity heartbeat, blood circulation will be accelerated accordingly, able to increase Myocardial blood displacement, the resting state of blood displacement decreased, the contraction force is also weakened. May destroy the contraction of the heart itself, beating frequency, activity is prone to panic and shortness of breath, easy to wheeze, exertion and other phenomena; 3, the nervous system impact: too much sleep, the nerve center is more in a state of inhibition, may be in the awake get up after the patient consciously head drowsiness, energy is not vigorous; 4, memory loss: too much sleep, the brain cell activity decreases, the sleep center inhibition of other Nerve center function, is not conducive to thinking, long will affect the brain memory ability; 5, abnormal muscle tone: rest time is long, the human body weak muscle tone, get up and will be conscious of limb weakness, lack of power; 6, the formation of blood clots: sleep time is too long will slow down the blood flow in the body, and long-term and even lead to the formation of blood clots, which in turn induced cardiovascular and cerebrovascular diseases.