冬季进行适宜的体育锻炼,不但可提高人体御寒和抗病能力,而且可磨练不畏困苦的坚强意志,但由于冬季天寒地冻,风大雾多,因此冬炼应注意几点:一、谨防运动性扭伤。冬天,气候寒冷,人们的手脚、关节、韧带、肌肉为了抵御寒冷,减少散热,反射性地出现血管收缩,肌肉的粘滞性增加,弹性伸展性降低,关节的活动幅度减少。若锻炼前准备活动做得不够充分,一旦进行剧 Winter suitable physical exercise, not only can enhance the body’s ability to resist cold and disease, but also strong fear of hardship temper, but due to winter cold, wind and fog, so winter should pay attention to several points: one Beware of sprained sprains. In winter, the weather is cold and the hands and feet, joints, ligaments and muscles of the human body resist the cold and reduce the heat. Reflex vasoconstriction increases the viscosity of the muscles, decreases the elastic extensibility and reduces the joint activity. If the preparatory activities before the exercise did not do enough, once the play