5天睡眠不足体重增长1.6斤5 days of insufficient sleep leads to a weight gain of 1.6 pounds.

在一项实验中，志愿者的睡眠时间被从9小时减少至5小时。结果，他们不仅正餐的食量变多了，平时吃的零食也增多了，尤其是晚饭后吃的东西比任何一顿正餐都多，相当于一天吃了4顿饭。睡眠不足会导致影响人们食欲的激素失灵，志愿者仅仅5天睡眠不足，体重就增长了1.6斤

In an experiment, volunteers' sleep time was reduced from 9 hours to 5 hours. As a result, they not only ate more during main meals but also increased their snack intake, especially after dinner, consuming more than during any regular meal—essentially eating 4 meals a day. Lack of sleep causes a malfunction in the hormones that regulate appetite. After just 5 days of insufficient sleep, the volunteers gained 1.6 pounds.