Treadmills are a great way to exercise as they provide you with a flat even surface to walk/jog/run on and they push you along once you get going. This gets your heart rate up to an even and consistent level which ensures a very efficient workout. It is a weight bearing exercise which is good for strengthening bone density. We have basic treadmills right through to top of the range commercial models. Most have many motivational workout programs and some even have heart rate control programs where your selected heart rate controls the machine to get the results you want.