The health may be defined as the condition of fit, healthy and well being of the physical, mental and social health of an individual. The personal and public hygiene is important for the maintenance of proper health.
The health education must be given in schools to explain the importance of health in the human life. The experiments and any research related to the health information is mainly developed by the study of the literature review and conducting the surveys.
Likely the chronological age, mainly because it would explain the differences in puberty stages between the two boys, which is an example of physical maturation.
