1 If you're under 16, it can helpful to bring along a parent or guardian for the initial interview with the people seeking babysitting. 2  This reassures the other parents that your own parents are invested in your success and that you mean business, and it also protects you.
Evolutionary biology. Fitness (often denoted w {\displaystyle w} or Ï in population genetics models) is the quantitative representation of natural and sexual selection within evolutionary biology. It can be defined either with respect to a genotype or to a phenotype in a given environment.
The World Health Organization (WHO) defined health in its constitution of 1948 as  a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity . Fitness is the ability to meet the demands of a physical task.otor Fitness refers to the ability of an athlete to perform successfully at their sport. The components of motor fitness are (Davis 2000) : 1  Agility. 2  Balance. 3  Co-ordination. 4  Power (speed & strength).