The risk of dying from cardiovascular disease is  21 % lower for each increase of 3.5 mL/kg/min, or 1 MET. 

This association persists after adjusting the analysis for confounding factors. The risk of dying from all causes during follow-up is gradually reduced with better fitness.

The Fitness Calculator estimates your fitness age measured as maximum oxygen uptake (VO2max). 

 Traditionally this test requires a mask connected to a machine that measures the composition of the subject’s breath during graded exercise taken to exhaustion.

Results derived this way will be more accurate than the 6MWT approximation. But the difference in accuracy is not significant.

The massive benefit of this calculator is that results can be obtained without access to any equipment other than a stopwatch to time the test. 

An activity tracker that measures resting and maximum heart rate is a convenience, and we have a very economical one. But one can just measure one’s pulse.

The other unique benefit of our calculator is that you can plug in goals and then measure your progress towards the achievement of those goals under the guidance of a simple AI type of interface.