Do you run on a tredmill?

So here's a quick tip for people who run on tredmills and outdoors - when you run outside, the ground is not moving (obviously), meaning you use your legs to pull your body weight. Running outside proportionally covers your quads and hamstrings (front and back of legs), though favoring hamstrings a little bit.

When you run on a tredmill, however, the ground IS moving. Thus there is not nearly as much "pull" when you run, as the tredmill is basically doing the "pull" for you. To correct for this, put the tredmill on a slight incline - just a few hits of the scale button, and then you'll get that "pull" back.

Most people find running on tredmills to be easier, and that would be why!