I have been a runner for about 12 years now. I love running and I love how my entire body feels when I am out on the open road hitting the pavement. When I can not get away from the house I like to run on the treadmill and then I am able to use free weights while I run to work on the upper arm strength. I was reading a little blurb on the Truth About Six Pack Abs websites and I found it really interesting to read about the treadmill versus the elliptical machine. Although I have never used the machine I have some friends that swear by it and I can not seem to give up my workout on the treadmill to try it.