Journal of Physiological Anthropology aims to investigate, how the speed of technological advance, experienced during the 21st century, is affecting mankind

The maximum functional ability of mankind has both manifest and latent components and the boundary between these two components changes depending on the type, frequency and intensity of stress encountered in daily life, which are in turn dependent upon the behavioral history of individuals. The three basic concepts of physiological polytypism, functional potentiality and whole-body coordination can be briefly defined as follows. Physiological polytypism is a characteristic phenotype of the manifest component and it depicts a specific difference manifested by an individual. Although physiological polytypism is influenced by gene and environmental factors, the latter effects, especially, are of a more plasticizing nature. Functional potentiality defines the superficially non-apparent, or latent, component of maximum functional ability. In these terms a coordinated response is considered to involve the body's functional adjustment system, which maintains homeostasis against certain stresses. The adjustment system is constructed and affected by the degree of the manifested function and the output distribution of various sub-system or element functions. These together mold the specific patterns of coordinated responses, and where the coordination system is systemic, it is known as whole-body coordination.We can use the three concepts of physiological polytypism, functional potentiality and whole-body coordination to discuss environmental adaptability and techno-adaptability from the viewpoint of the adaptability of groups, thereby allowing us to consider the nature of human diversity and its meaning.The elements affecting phenotype in polytypism include gene, physical environmental and culture related factors. The phenotype is affected by genes themselves as well as by the interactions of physical and/or cultural factors on the genes [1]. Since our lifestyles and the environments in which we live are consistently shifting and changing with the advances made in science an