Cardiovascular training or cardio as we know it, is an aerobic solution that allows for more oxygen to be pumped through your body and hence burn more energy, muscle or fat. Latest research suggests that if you want six pack abdominals and a physique like a 100 meter sprinter, then less is actually more. So whats the best cardio for a six pack. H.I.T.T. - High Intensity Interval Training. What is it? Well it basically makes you work slightly harder … full story