普通健康人从事重体力劳动，由代谢产生 的热且增加１０倍，而优秀运动员从事运动时产热将增加２０倍，大约８０％的能量以热的形式释放，仅有少部分转化为肌肉做功。外界温度的升高以及机体内热的积累，加速热量的排出，并且伴随体内大量水分的散失，导致运动员水平衡失调或脱 Ordinary healthy people engaged in heavy manual work, the heat generated by metabolism and increased 10 times, while elite athletes engaged in exercise heat will increase 20 times, about 80% of the energy released in the form of heat, only a small part of the conversion into muscle work . The outside temperature and the accumulation of body heat to accelerate the discharge of heat, and accompanied by the loss of a lot of water in the body, leading to imbalance or off-balance of athletes