Just finished the 20 minute Insanity Fit Test. I’m so out of shape! http://ow.ly/h2f5a I took a few 30 second breaks but got through it. Check out the video if you want to try it. Should be able to get through the whole thing soon. Interval training is so much more challenging than just being on a treadmill or elliptical for the same amount of time. These were some of the same drills and exercises I did in practice when I used to play basketball.