Its a really huge effort to run the stairways in my home. We have 2 floors and I show you a quick run 2 times the 2 floors with my heavy body. And my fat is jiggling... Coming back at the ground, I show you my heartbeat and you see how much it stressed me. I had to breathe hard and loud, so you hear the heartbeeat quiet, you should turn the speakers high end ;) This is the wmv-Videoclip version in resolution 640 x 480.