The new concept of fitness age has been developed by researchers at the Norwegian University of Science and Technology in Trondheim. To determine your fitness age they measure your body’s ability to take in and utilize oxygen. This measurement is your VO2max, and it indicates your current cardiovascular endurance. The research suggests that although we can’t change our chronological age, it is possible to change our fitness age through consistent exercise.
For more on this article, see the New York Times.