We first define the function as a variable, myFirstFun, using the keyword function, which also receives n as argument (no type specification). The latter will exist within the function. We used an integer, but 'n' could also be a vector or a matrix or a string: R handles all this nicely for us.
America in the 20th Century. The 20th century heralded the beginning of a new era in fitness. President Theodore Roosevelt, perhaps the most physically fit president ever to occupy the Oval Office, used his power and own example to encourage U.S. citizens to be physically active.
Fitness and exercise are key components to wellness. Health promotion majors work to encourage and educate those in community and business settings about what is involved in appropriate exercise and keeping a fitness routine. Health promotion majors may also get involved in managing fitness centers, including overseeing fitness classes, testing and programming. Organizations such as the Mayo Clinic Health System have created entire Health Promotion departments where such workers can seek jobs.