Incline treadmill benefits can be three times in terms of calorie burn. Lose weight fast by burning more calories. In the electric treadmill, the incline can be a manual or an electronic function as well. The manual incline is usually on three levels, as in the manual treadmills. However, manual incline treadmills are less expensive and with fewer functions. You have to get down from the treadmill and set the incline level and start again. In these cases, the incline is rarely greater than 10%