冬季锻炼正是时候,体育锻炼可提高人们的御(yu)寒能力,事实证明,冬季到户外参加体育活动,身体受到寒冷的刺激,肌肉、血管不停的收缩,能够使心脏跳动加快,呼吸加深,体内新陈代谢加强。身体产生的热量增加,可以加快血液循坏,增加大脑氧气的供应量,这对消除大脑长期学习带来的疲劳,增强记忆力,提高学习效率,都有积极的作用。冬季体育锻炼,接受阳光的照射,弥补阳光照射的不足。阳光中的紫 Winter exercise is the time, physical exercise can enhance people’s Royal (yu) cold ability, the fact that the winter outdoors to participate in physical activity, the body by the cold stimulation, muscle, vascular non-stop contraction, can make the heart beat faster, breathing Deepen, the body metabolism to strengthen. The increased heat generated by the body can speed up the blood circulation and increase the supply of oxygen to the brain. This has a positive effect on eliminating the fatigue caused by long-term learning of the brain, enhancing memory and improving learning efficiency. Winter sports, accept the sun’s exposure, make up for the lack of sunlight. Purple in the sunshine