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.
According to the The United States Department of Health and Human Services (USDHHS) 1, physical fitness is defined as a set of attributes that people have or achieve that relates to the ability to perform physical activity. This description goes beyond being able to run long distance or lift a lot at the gym.