Physical fitness is very important for longevity and good health. The maximal oxygen uptake (fitness) is the most precise measure of overall cardiovascular fitness. Until recently there has been no robust material that describes the distribution of maximal oxygen uptake across a healthy, adult population. To investigate this, and further study how maximal oxygen uptake was associated with conventional risk factors, researchers at K. G. Jebsen Center of Exercise in Medicine at the Norwegian University of Science and Technology tested more than 4,600 healthy Norwegians between 20 and 90 years.
Its easy to figure out how fit you are -- and perhaps how much fitter you should be - by using this calculator.