Spring fever can't light sleep 
 
 
Source: health 

    Once in the spring, some people will feel sleepy in the morning, the day can't come. This state may be caused by "chunkun".
 
    Winter, the temperature change is big, the body need to have an adaptive process. Winter cold, the human body in order to adapt to the environment, the skin pores and sweat glands to prevent temperature divergence, and in the spring, rising temperatures, the pores of the skin stretch, systemic blood flow increased, the brain of oxygen supply less, don't adapt, the activity in the brain may be affected, whole body clock is not, people will feel fatigue, general malaise. So someone will say, simply point more sleep come here.
 
    To solve the "chunkun" more sleep alone is not a good solution. Because the normal adults about eight hours of sleep every day is enough. Much sleep not only won't let a person awake, will be more groggy, because sleep too much may reduce the excitability of cerebral cortex, make it in a state of inhibition.
 
    In this season, the first thing to keep a good living habits, sleep wake up on time, don't disrupt routine; Second, maintain indoor air fresh, want to often ventilated take a breath; Three is to participate in outdoor activities, improve the oxygen in the brain; Four is to participate in some entertainment activities more, stimulates the brain activity, improve brain threshold. (ZangYunZhi)
 
 
 
 
The original link: http://www.jkb.com.cn/healthyLiving/health/2015/0320/364419.html