医学专家指出,如老年人坐在椅子上打盹儿,醒来后会感到全身疲劳、头晕、腿软、耳鸣、视觉模糊,如果马上站立行走,极容易跌倒,发生意外事故。这种现象是脑供血不足产生的,因为坐着打盹儿时,流入脑部的血液会减少,同时 Medical experts pointed out that if seniors do not sleep in their chairs and wake up, they feel tired, dizzy, soft-legged, tinnitus and blurred vision. If they stand up and walk immediately, they may fall easily and accidents occur. This phenomenon is due to insufficient blood supply to the brain, because sitting in a nap, the blood flow into the brain will be reduced, at the same time