truth be known cardio is cardio doing some no matter what time you do it is better than doing non at all...
there are just better times to do cardio...
the best (imo) is first thing in the morning on an empty stomach 45min walking at a decent pace with an incline..
the 2nd best being PWO when you have just used all of your available carbs for weights so your cardio can tap into your fat stores for energy...
the 3rd being approx 60min after your last meal which when your trying to lose fat shouldnt be that much after 8pm
you have loads of substances that will help the process(Caffeine/ECA..etc..etc) but the main rule is just do cardio no matter what time..
in my opinion anything less than 30min is a waste of time as your body only taps into your fat stores after 20min....
also something else to bear in mind your body is not only in Fat burning mode for the time you are doing cardio it is also in fat burning mode for a further 3x time doing cardio(40min cardio = 120min post cardio fat burning)
this is only my opinion....
