I don't run long distance a lot these days, but I certainly experience "something high" even with 5 mile running. Not all the time and not all to the same intensity, but quite a lot and quite "high". I actually come to enjoy running while my knees might be in pain as if the mood change has raised tolerance against pain. It feels refreshing and energetic, and I feel joy of jumping whenever I step each foot ahead. Like many other runners, I can probably call this "runner's high". But it's true that runner's high has been debated for a long ...

How long should we do cardio to lose more body fat? I don't remember exact sources but I heard quite a few times that longer cardio with low intensity is better than short cardio with high intensity because low intensity cardio workout uses mainly body fat as fuel while high intensity cardio workout uses more carbohydrate. It is also said that body fat starts to burn when you are into cardio exercise at least 30 minutes. I decided to be more creative and make my own theory that we should do a cardio workout at least 40 minutes. I thought that ...