Psychology is the science of human behaviour.

Sports psychology is the application of psychological Principles to sports and physical activity at all levels of skill improvement.

Growth - The term growth in physical education means the growth of the parts of the body, may be in size, height and weight Development can be defined as progressive series of changes in an orderly coherent pattern.

Adolescence is the period of great stress and strain, storm and strife or Adolescence is the period of change from childhood to adulthood.