很多学生平时锻炼很积极,但到了冬季就不愿意参加锻炼了,造成身体素质下降,经常生病,影响学习。究其原因,除怕冷之外,主要是不了解冬季锻炼的意义。我们常常看到,有的人只穿一件很薄的运动衣,在刺骨的寒风里练长跑,有的 Many students usually exercise very active, but in winter do not want to participate in exercise, resulting in decreased physical fitness, often sick, affecting learning. The reason, in addition to the cold outside, mainly do not understand the meaning of winter training. We often see that some people wear only a very thin sportswear, long-distance running in the biting cold, and some