If you are in the position to track your calories burned during cardio then great. However, if it’s too impractical or unrealistic to do so, then don’t worry too much about it.

As long as you understand the principle of calorie expenditure from exercise and you can apply it on a practical level for you then brilliant.

Some people enjoy using calorie counters, heart rate monitors, software and apps to track their workouts, but consider this optional. The best way to tell if it’s working is to track your results. Are you progressing to your goal? If not then you need to make an adjustment to your nutrition and / or your cardio.