研究表明,睡前喝杯水可在一定程度上防止脑血栓。脑血栓的发病时间多在清晨至上午期间,说明血黏度增高同脑血栓的发生有一定关系。人的血液黏度在一天之中不停地变化着,并有一定的规律:早晨4点～8点血黏度最高,以后逐渐降低,至凌晨达到最低点,以后再逐渐回升,至早晨再次达到峰值。 Studies have shown that a cup of water before going to bed to a certain extent, prevent cerebral thrombosis. Incidence of cerebral thrombosis mostly in the morning to morning, indicating that increased blood viscosity has a certain relationship with the occurrence of cerebral thrombosis. People’s blood viscosity constantly changing throughout the day, and a certain rule: 4:00 to 8:00 the highest blood viscosity, and then gradually reduced to reach the lowest point in the early hours, then gradually rose again to peak again in the morning .