这项工作的目的是借助自然的物理规律，增加对复杂人体及其功能的理解。在这里，我们揭示了环境温度对一个人工作能力的影响，这反过来会影响国家生产商品和服务的能力，从而促进国家经济的发展。热力学第二定律在人体中的应用表明，在温和的气候条件下，人均有效功比在极端炎热或寒冷的气候条件下要大。在温和气候下，为劳动力提供舒适的环境可以将工人的生产力提高到最佳水平。因此，各国需要消耗大量能源来创造这种最佳的生产环境，以增加服务和产品的增长。 对人工创造舒适环境的成本进行的调查显示，冷却成本高于加热成本。在这项研究中，我们首先评估了169个国家的劳动力生产率，这些国家通过测量商品和服务总量获得数据，这些商品和服务是通过人均国内生产总值（GDP）数据每年生产的。其次，从每个国家随机选择一个城市来代表这些国家的平均温度。数据显示，气候条件极热或极冷的国家，其劳动力生产率低于气候温和的国家。这一发现增加了我们对人类的理解；他们的行为和表现受到环境的影响； 以及最终，我们的经济福祉如何受到温度等物理因素的影响。单位:SICitation:ASHRAE Transactions，第114卷，pt。2008年1月1日，纽约

The purpose of this work is to add to the understanding of the complex human body and its functions with the aid of the physical laws of nature. Here, we reveal the influence that the environmental temperature has on a person’s ability to do work, which in turn affects the nation’s ability to produce goods and services to contribute to the advancement of the nation’s economy. The implementation of the Second Law of Thermodynamics to the human body predicts that the useful work per person in moderate, temperate climates is more than that in extreme hot or frigid climates. The availability of comfortable environments for the labor force in temperate climate can foster workers’ productivity to an optimum level. Therefore, countries consume a high amount of energy to produce this optimum productive environment to increase the growth of services and products. An investigation of the cost of artificially producing a comfortable environment shows a higher cost of cooling over heating. In this study first, we evaluate the labor force’s productivity of 169 countries that have data available by measuring the total goods and services, which are produced per year through Gross Domestic Products per Capita (GDP) data. Secondly, a city from each country is randomly selected to represent the average mean temperature of these countries. The data shows that the predispositions of the countries where the climatic conditions are extremely hot or frigid have poorer labor force’s productivity than those with moderate, temperate climates. This finding add to our understanding of human beings; the fact that their behaviors and performances are affected by their environment; and how ultimately, our economic wellbeing is affected by physical factors such as the temperature.Units: SI