Trevor Archer
The science of behavior has been afforded much fuel for advancement of notions of lifespan development through the emerging observations of (i) physical exercise as an intervention for disease states and health assurances and (ii) epigenetics as the biological avenues determining whether or not individuals well-being or illbeing . Any bodily activity that enhances or maintains physical fitness implies the involvement of regular and frequent exercise have defined exercise as a planned, structured physical activity with the purpose of improving one or more aspects of physical fitness and functional capacity. Epigenetics may be defined as the study of heritable phenotypic expressions resulting from changes in a chromosome without alterations in the DNA sequence. It has been applied in developmental psychology to examine psychobiological development emerging from an ongoing, bi-directional interchange between heredity and the environment through mechanisms of temporal and spatial control of gene activity during the development of complex organisms thereby shaping the behavior of individuals and organisms; as an experimental aspect of psychology it investigates how the life-span of ‘nurture’ orchestrates the biological heredity of ‘nature’.