What Is Your Fitness Age?

Check out this fitness calculator. It tells you your "fitness age" based on your actual age, how much and how hard you exercise, your waist measurement, and your resting heart rate. It's rare for this kind of calculator to take physical activity into account, not just your current weight and measurements. It's posted by the Norwegian University of Science and Technology, and you know how those crazy Norwegians are... the happiest, most prosperous people on earth. 

So, I'm inclined to believe this lovely, little calculator, plus they spell it kalkulator which is really how it should be, don't you think??

P.S. It also tells you your approximate VO2max score, a measure of aerobic fitness or how efficiently you use oxygen. If you want to put that score in context, check out this chart.