HIIT (High Intensity Interval Training)

This is similar to the pyramid workout i mentioned earlier. Basically what it is, is you have time intervals, where you switch from low paced movement to high pace movement. Usually the low paced (resting time) is longer than the high. I cannot stress enough how incredible this is! It not only helps your cardiovascular system, but you burn tons of calories in half the time you would spend jogging! Please read this article, and you will see why it is so effective, http://www.intervaltraining.net/highintensityintervaltraining.html