Tread mill is an exercise machine where you can stay on the place and it is introduced sir William cubit in 1817. As it is basically conveyor belt drive by separate motor and then you can adjust that motor speed as per your convenient by control unit .just start the motor belt will be rotating then you will run on the belt. While you are running need more calories so extra calories used where have extra calories. Tread mill have more advantages like it is easy compare to other complex exercises, indoor use activity, no need to join in gyms and then people not needed to walk outside. prodotti.herbalife.it But in modern days more variety of tread mills have came such as different design, various capacity motors, programmed motor controlling units, different display and etc.. Those tread mill cost costs to be varying based on designs shape and motor capacity.