How to Improve Cardiorespiratory Fitness
You can improve your cardiorespiratory fitness by performing any type of prolonged exercise that recruits your aerobic energy system. Any exercise activity that gets your heart rate up and keeps it up for a prolonged period of time qualifies as legitimate cardiorespiratory exercise and is beneficial for your aerobic fitness. However, to achieve optimal results from your cardiorespiratory fitness training you should select your activity type, intensity, frequency, and duration according to the guidelines discussed below.