This can help you more objectively assess your cardiovascularfitnessand determine optimal heart rate training zones for improving fitnessand endurance.
They have to maintain their cardiovascularfitnessand strength, and the best will hone parts of their bodies they believe need work sort of like a model who wants the taut tummy to compete in the lingerie catalog world.
Finally, and most important, recent studies have shown convincing evidence that cardio-respiratory fitness is a much stronger predictor of longevity and reduced risk of cardiovascular mortality and all-cause mortality than BMI.