So you are planning to go jogging or even just a walk, but the weather does not allow it. It is a good thing that you have the option of owning a treadmill. It's a low-impact cardio machine that paves the way for walking, jogging, and even running in its place. This is made possible by a movable belt placed over a bridge. You can choose between a manual and a motorized treadmill. The manual type is lighter and cheaper. You can easily fold it, tuck it under the bed or put it in the closet.