hiya, intervals are meant to be the best form of cardio for burning the fat, bringing ur heart rate up to about 80-90% of its max. doing 1min intervals with 1 min rest periods is good, for around 9 intervals. Its been shown that not eating for an hour after means that ur burn additional fat, then eating something with a low GI value would be best.
On a recomendation intervals should only be done if a good level of cardio fitness has already been obtained.
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