You burn more fat during that period of exercise, however, your body will compensate by reducing your fat oxidation throughout the remainder of the day.
If you’re tight on time, fasted cardio saves you from having to prepare, eat, and digest a meal beforehand.
If you practice intermittent fasting and you do not eat breakfast, fasted cardio allows you to exercise before you eat for the day.
It may hinder performance- especially if you’re doing moderate or high intensity workout on an empty stomach, your energy levels will be down.
Avoid fasted cardio if you have a medical condition that’s affected by low blood sugar or blood pressure or if you’re pregnant.
It’s not recommended for beginners — understanding your body well should be the first step before you even think about doing fasted cardio.
Fasted cardio works for me but just because it works for me it does not mean it has to work for you.
You should simply use the type of cardio (fasted or fed) that you personally prefer and can accommodate into your lifestyle easier. What really counts at the end of the day is that you do not overeat the calories/fat you burnt during doing your cardio.