Under-use of body energy and over-use of external energy

Jorgen Stig Norgard, Technical University of Denmark

Keywords

health, human energy, obesity, energy savings, energy slaves

Abstract

The world's affluent countries, such as the EU, are facing two severe problems with long-term consequences. One problem is the epidemic-like increase in adverse health effects, which are related to the increasing wealth, primarily appearing as obesity and its associated diseases. This is caused by overeating and under-use of the body energy, due to increased use of mechanized and energy consuming assistance for transport and other daily tasks. This connects to the other problem, namely these countries' excessive use of fossil fuels and other environmentally harmful forms of nature's external energy. This paper illuminates the options for integrated solutions to the two problems by making more use of body energy as a means to reduce the use of nature's external energy.

First is listed a human's body energy used for various tasks and occupations, showing that a person's use of external energy is and order of magnitude higher, which can be expressed by the scores of "energy slaves" each citizen utilizes. An extra health driven physical effort by humans seems to have negligible impact on energy consumption. The paper will, however, indicate examples of significant savings of external energy, achieved by healthy extra human efforts. Also, the paper will suggest ways to integrate energy saving policies with health policies for organizing and designing cities and houses to be "healthy inconvenient", encouraging or pushing people to use their body in their daily doings. This is an enormous challenge to the conventional way of thinking among architects, engineers, planners, as well as individuals in general.