But it's not just overeating at holiday parties that's to blame. When it's cold and snowy — or slushy or icy — outside, people spend more time indoors, which in turn can mean getting less physical activity.
不过我们长胖不仅是因为节日聚会上的胡吃海塞。当外面天寒地冻、大雪纷飞,或是雪泥堆积、路面结冰,人们会更常呆在室内。相应地,运动量也会减少。