People who enjoy working up a sweat often prefer treadmills to pounding pavement in running shoes. Treadmills provide a certain level of assistance in terms of inertia but to maintain a comfortable and sustainable motion, speed settings have to be spot on. Lately, it has probably felt as if you have been trying to run quickly on a treadmill's slowest setting. The pace is about to quicken and you won't need to invest quite so much effort to move when it does. Get ready.