1MD Complete Probiotics The best cardio workout is one that is applied. What Healthy Body do I mean when I say applied? Well if you think that just by dieting you're going to lose a lot of fat then you're lying to yourself. Let me explain it straight to your face. If you don't perform the best cardio workout, if you don't exercise thoroughly you will not lose fat. And even if you do loose fat through just dieting it's never long lasting. Burning of fat and calories through hard work is what lasts. And that is something you definitely want, something long lasting and truly substantial.