With used manual treadmills the only energy you are burning up is your own. Used manual treadmills offer the user the opportunity to increase their fitness level without increasing their electric bill. These nonelectric treadmills are generally lower in price than motorized treadmills.
Used manual treadmills are put into motion by the user walking on them. The user maintains control of the speed of the treadmill by simply walking faster or slower. When the user wants to stop they simply step off the treadmill. Used manual treadmills automatically keep pace with the person using it, giving the user more control of the intensity and length of their workout.