改善膳食,保证供给人体一定的营养和热量,这是所有人群的共同需要.然而,体力劳动者的膳食却应与众不同.这是为什么呢?从体力劳动的特点谈起体力劳动和脑力劳动,从生理上看并没本质的区别,它们都需要在中枢神经支配下,由全身各个器官协调一致地进行工作.但是,对全身器官来说,却各有侧重,各有特点.体力劳动以肌肉、骨骼的活动为 Improving the diet and assuring the nutrition and caloric supply to the human body is a common requirement for all groups of people, however, the diet of manual workers should be different from others. Why is this? Speaking of physical and mental labor from the characteristics of physical labor Physically, there is no essential difference between them and they all need to be coordinated by the various organs of the body under the control of the central nervous system. However, for the whole body organs, they have their own emphases and have their own characteristics. Muscle, bone activity is