A Good Intro to HIIT

Here is another great explanation of HIIT.

clipped from www.davedraper.com High Intensity Interval Cardio Training The reason that High Intensity Interval Training works better for fat loss is this: When you do a cardio session at the same pace the whole time, your body goes into what is called steady state. This means that your body has adjusted itself to the speed you are going and tries hard to conserve energy (calories). You will be able to avoid this and burn more calories and FAT by doing the interval training. Another easy way to introduce yourself to this kind of cardio without killing yourself right off the bat is simply to keep changing your speed and intensity level every two minutes or so — go up and down — challenge yourself. This will "trick" your body into burning more calories since it can not achieve steady state.