社會形態改變，民生物質不斷的大量生產。從消費者的角度來看，表面上雖然受惠，從另一角度而言，飲食起居如果不懂節制，到最後受害的還是消費者。根據世界健康組織 (World Health Organization) 1998 年的調查數據指出，將身體質量指數25～29.9 定義為過重，30 以上為肥胖，全世界有將近2 億5 千萬 (約占全世界人口7%) 肥胖的成人，以及5 億過重的成人。肥胖，容易引起許多疾病，它所消耗的個人以及社會成本，更是難以數計，如何建立正確體重控制觀念，相信是許多人所興趣知道的；本文嘗試由能量消耗 (energy expenditure) 的觀點切入，探討身體消耗能量的管道有哪些，期望對體重控制有興趣的人，透過觀念的加強認知，身體力行，擬定適當的運動計劃，真正的達到體重控制的目的。

As social morphological changes, livelihood substances were constantly mass produced. From the consumer's point of view, it was very convenient. From another point of view, if you do not understand the daily diet control, finally you would be victims. According to the World Health Organization of 1998, if the body mass index of 25 to 29.9 was defined as overweight, over 30 was obese, there were nearly 250 million (about 7% of the world's population) obese adults and 500 million overweight adults. Obesity prone to induced many diseases, not to mention of personal and social costs. It was believed that many people were interested to know how to establish the correct concept of weight control. This paper tried to explore the relationship between energy expenditure and weight control. Expecting the results can strengthen the awareness concept for those people who were interested in weight control and encouraging those people developing appropriate exercise program, reaching the real purpose of weight control.